Theodore Cohen
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Pittsburgh professor and chemist
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Chemistry
Theodore Cohen 's Degrees
- PhD Chemistry University of California, Berkeley
Why Is Theodore Cohen Influential?
(Suggest an Edit or Addition)According to Wikipedia, Theodore Cohen was an American organic chemist and chemistry professor at University of Pittsburgh. He is known for his research on organic chemistry, and particularly on organosulfur compounds, on organometallic chemistry, and on the synthesis of phenols.
Theodore Cohen 's Published Works
Number of citations in a given year to any of this author's works
Total number of citations to an author for the works they published in a given year. This highlights publication of the most important work(s) by the author
Published Works
- Organoalkali compounds by radical anion induced reductive metalation of phenyl thioethers (1989) (190)
- A general preparative method for .alpha.-lithioethers and its application to a concise, practical synthesis of brevicomin (1980) (138)
- Copper-quinoline decarboxylation (1970) (119)
- A simple preparation of phenols from diazonium ions via the generation and oxidation of aryl radicals by copper salts (1977) (110)
- Kinetics and mechanism of the copper(I)-induced homogeneous Ullmann coupling of o-bromonitrobenzene (1976) (107)
- Two-flask preparation of .alpha.-lithio cyclic ethers from .gamma.- and .delta.-lactones. Reductive lithiation as a route, via radical intermediates, to axial 2-lithiotetrahydropyrans and their equilibration to the equatorial isomers (1984) (82)
- Secondary orbital interactions determining regioselectivity in the Diels-Alder reaction. 4. Experimental and theoretical examination of the reaction of acrylonitrile with 1-(phenylthio)-2-methoxy-1,3-butadiene. Determination of the conformations of the four cyclohexene adducts by proton NMR (1973) (78)
- Products and kinetics of decarboxylation of activated and unactivated aromatic cuprous carboxylates in pyridine and in quinoline (1978) (66)
- Synthetically useful .beta.-lithioalkoxides from reductive lithiation of epoxides by aromatic radical anions (1990) (65)
- Removal of sulfur groups from molecules by copper(I). Preparation of sulfur-substituted 1,3-dienes for the Diels-Alder reaction (1976) (64)
- Allylcerium(III) compounds, powerful new synthetic reagents: a new stereocontrolled approach to olefins and methylene-interrupted polyenes (1987) (62)
- Application of copper(I)-induced thiophenoxide removal to ring expansions or chain extensions of aldehydes and ketones. Detection, Isolation, and independent preparation of the .alpha.-epoxy thioether intermediate (1975) (61)
- A general procedure for preparing .alpha.-lithiosilanes. Generalization of the Peterson olefination (1984) (61)
- Stereochemical analysis of totally stereoselective competing [1,2]- and 2,3]-Wittig rearrangements. Inversion at the lithium-bearing carbon atom (1992) (61)
- Carbonyl-protected .beta.-lithio aldehydes and ketones via reductive lithiation. A general preparative method for remarkably versatile homoenolate equivalents (1992) (59)
- Communications-The Oxidation of Epoxides by Dimethyl Sulfoxide. A simple Synthesis of α-Hydroxy Ketones. (1961) (57)
- Organocopper intermediates in the exchange reaction of aryl halides with salts of copper(I). The possible role of copper(III) (1974) (57)
- .gamma.-Lithioalkoxides via reductive lithiation of oxetanes by aromatic radical-anions (1989) (55)
- Copper(I)-induced reductive dehalogenation, hydrolysis, or coupling of some aryl and vinyl halides at room temperature (1975) (55)
- Generation, some synthetic uses, and 1,2-vinyl rearrangements of secondary and tertiary homoallyllithiums, including ring contractions and A ring expansion. Remarkable acceleration of the rearrangement by an oxyanionic group (1993) (50)
- Synthetically useful dianions via reductive lithiation of tetrahydrofurans by aromatic radical anions (1991) (49)
- Reductive Lithiation of Some Thioketals Using Lithium 1-(Dimethylamino)naphthalenide (1980) (48)
- Laboratory model for the biosynthesis of cyclopropane rings. Copper-catalyzed cyclopropanation of olefins by sulfur ylides (1974) (46)
- A practical method for using alkoxide-accelerated vinylcyclobutane ring expansions in the synthesis of six-membered rings. Unexpected orbital symmetry allowed and forbidden 1,3-sigmatropic rearrangements (1983) (43)
- Regio- and enantioselective iridium-catalyzed allylation of thiophenol: synthesis of enantiopure allyl phenyl sulfides. (2010) (42)
- Role of radical and organocopper intermediates in aromatic diazonium decomposition induced by cuprous ion (1974) (41)
- Simple one-pot syntheses of spiroketals and oxaspirolactones by addition of .gamma.- and .delta.-cerioalkoxides to lactones and cyclic anhydrides (1990) (41)
- Enantio- and diastereoselective tandem zn-promoted brook rearrangement/ene-allene carbocyclization reaction. (2009) (40)
- Preparative methods for .beta.-acyl vinyl anion equivalents from enones or allyl sulfides (1976) (39)
- Additions and Corrections, "Copper(I)-Promoted Thiophenoxide Ionization in Solution. A Simple Synthesis of Vinyl Phenyl Sulfides." (1975) (39)
- Complete regio- and stereospecificity in the Lewis acid catalyzed Diels-Alder reactions of (Z)-2-methoxy-1-(phenylthio)-1,3-butadienes. Conversion of the CS configuration of an adduct to the CC configuration at the allylic position by a [2,3] sigmatropic rearrangement (1982) (39)
- Copper-induced coupling of vinyl halides. Stereochemistry of the Ullmann reaction (1972) (38)
- A simple preparation of sulfur-stabilized cyclopropyl anions via reductive lithiation of cyclopropanone dithioketals. (1978) (38)
- Oxidative decarboxylation of carboxylic acids by pyridine N-oxide (1967) (35)
- S-(+)-5-(Phenylthio)-2-pentanol and S-(+)-4-(Phenylthio)-2-butanol: Readily Prepared, Useful Additions to the Chirality Pool. Highly Enantioselective Syntheses of Naturally Occurring Spiroketal Pheromones (1995) (35)
- Unexpected regioselectivity in the reductive cleavage of epoxides: a theoretical rationalization (1989) (35)
- A simple method for producing cycloalkenyllithiums from cycloalkanones via reductive lithiation of enol phenyl thioethers (1990) (33)
- A novel one-flask cyclopentannulation involving a dilithiomethane equivalent as a β-connector of two enones. A highly efficient total synthesis of (±)-hirsutene (1993) (33)
- Low temperatures favor kinetic 1,4- over 1,2-addition of organolithiums to .alpha.-enones. The crucial role of ion-pairing (1987) (32)
- Use of aromatic radical-anions in the absence of THF. Tandem formation and cyclization of benzyllithiums derived from the attack of homo- and bishomoallyllithiums on alpha-methylstyrenes: two-pot synthesis of cuparene. (2001) (32)
- The Action of Acetic Anhydride on 4-Methylpyridine-N-oxide1 (1955) (32)
- Reductive metallation : A general preparative method for hydrocarbon allylmetallic compounds (1986) (32)
- Allyl sulfones as precursors to allylzincs in the palladium-catalyzed zinc-ene cyclization: highly efficient synthesis of enantiopure (-)-erythrodiene. (2005) (31)
- Cerium(III) chloride remarkably increases the rates of formation and yields of ketones in the reaction of lithium carboxylates with organolithiums (1994) (31)
- A synthesis of 2-vinylcylobutanones using 1-methoxycyclopropyllithium reagents (1981) (31)
- Cyclization by intramolecular carbolithiation of alkyl- and vinyllithiums prepared by reductive lithiation: surprising stereochemistry in the lithium oxyanion accelerated cyclization. (2002) (30)
- [2,3]-Sigmatropic rearrangement of an in situ prepared ylide and a thio ether to thio ester conversion as key steps in short syntheses of sarkomycin and its phenyl thio ester (1985) (30)
- Carbenoid type base induced ring expansion of the adducts of cyclic ketones with bis(phenylthio)methyllithium (1987) (30)
- Remarkable stereocontrol in the addition of an anion to an α- alkoxyaldehyde by encouraging or discouraging internal complexation. Applications to brief syntheses of the mus musculus (house mouse) pheromone and exo-brevicomin (1985) (30)
- The mechanism of the Ullmann reaction. Detection of an organocopper intermediate. (1965) (29)
- Intramolecular carbozincation of unactivated alkenes occurs through a zinc radical transfer mechanism. (2007) (29)
- Mechanism of the copperinduced Pschorr cyclization. New phenol synthesis involving hydroxylation of the intermediate radical by cupric ion (1967) (28)
- A method for methylidenation and ethylidenation of an allylic thioether leading to a 2,3-sigma-tropic rearrangement. Failure of the Simmons-Smith reaction in the presence of thioethers (1982) (27)
- Single and double ring-closure reactions of dianions of bis(diphenyl thioacetals). A new, synthetically useful principle of carbene generation and intramolecular capture (1982) (27)
- Two syntheses of (-)-kainic acid via highly stereoselective zinc-ene cyclizations. (2007) (27)
- The conversion of carboxylic acids and esters into acyl anion equivalents via reduction lithiation of their ketene phenylthioacetal derivatives (1979) (27)
- Cyclization by intramolecular carbolithiation of alkyl- and vinyllithiums prepared by the action of aromatic radical anions on phenyl thioethers. High stereoselectivity in the cyclization accelerated by an allylic lithium oxyanion. (2006) (27)
- Acid-Catalyzed Amide Hydrolysis Assisted by a Neighboring Amide Group (1964) (27)
- Highly efficient terpenoid pheromone syntheses via regio and stereocontrolled processing of allyllithiums generated by reductive lithiation of allyl phenyl thioethers (1991) (26)
- Use of dilithiomethane equivalent in a novel one-flask [2 + 1 + 2] cyclopentannulation reaction: a highly efficient total synthesis of (.+-.)-hirsutene. (1992) (26)
- Generation, rearrangements and some synthetic uses of bishomoallyllithiums (1994) (26)
- Carbenoid anion behavior of dilithio derivatives of thioacetal alcohols. Stereochemistry and mechanism of ring closures by oxyanion-facilitated carbon-hydrogen bond insertion (1986) (25)
- The magnesium-ene cyclization stereochemically directed by an allylic oxyanionic group and its application to a highly stereoselective synthesis of (+/-)-matatabiether. Allylmagnesium compounds by reductive magnesiation of allyl phenyl sulfides. (2001) (25)
- Trapping of picolyl cations in the reactions of 2- and 4-picoline N-oxide with acetic anhydride (1972) (24)
- Tandem Lithium−Ene Cyclization and Thiophenoxide Expulsion to Produce Fused Vinylcyclopropanes: First Observation of Allylic Lithium Oxyanion-Induced Reactivity and Stereoselectivity in Intramolecular Carbolithiation (2000) (24)
- Hydrophobic Bonding. Its Detection by Nuclear Magnetic Resonance Spectroscopy and Its Effect on the Chemical Shifts of Internal Standards (1965) (24)
- Cyclopentenone and cyclohexenone annulations via acid-catalyzed 1,2- and 1,3-acyl migration of 2-vinylcyclobutanones. Rearrangement route to spiro- and angularly substituted fused-cyclopentenones. (1981) (24)
- The preparation of synthetically useful carbonyl-protected δ- and ε-lithio ketones via reductive lithiation (1997) (23)
- THEORY AND MECHANISM OF THE ALLYLIDENECYCLOPROPANE TO METHYLENECYCLOPENTENE THERMAL ISOMERIZATION (1995) (23)
- Regiochemical control in the reductive cleavage of 2-alkylated oxetanes by use of trialkylaluminums. Tertiary organolithiums with .gamma.-oxy functionality (1991) (23)
- Ketene bis(phenylthio)acetals. Easily prepared intermediates for the conversion of acids and esters to .alpha.-alkylidene ketones and sulfur-substituted dienes (1979) (23)
- Synthesis of (-)-α-kainic acid via TMSCl-promoted Pd-catalyzed zinc-ene cyclization of an allyl acetate. (2011) (23)
- The Production of Organocopper Intermediates from Radicals in the Reactions of Aromatic Halides and Diazonium Ions with Cuprous Benzoate. New Synthetic Methods for Aryl Benzoates1 (1966) (22)
- A General Diastereoselective Synthesis of Spiroacetals Related to Those in Ionophores via the Reaction of Lactones with Cerium(III) .gamma.-Cerioalkoxide. MAD Reverses the Diastereoselectivity of the Addition of Methylmetallics to a .beta.-Keto Ether (1994) (22)
- A general approach to 4-substitution of 2-alkylfurans (1981) (22)
- 1-Phenylthio-1-(trimethylsiloxy)cyclopropanes via the sila-Pummerer rearrangement (1987) (21)
- THE REACTIONS OF 2- AND 4-PICOLINE N-OXIDES WITH PHENYLACETIC ANHYDRIDE. (1965) (21)
- Efficient synthetic methodology for 1-(phenylthio)cyclopropylsilanes, precursors of 1-(lithio)cyclopropylsilanes (1985) (21)
- Organolithiums by reductive lithiation: the catalytic aromatic method versus the use of preformed aromatic radical-anions. Naphthalene can behave as a catalyst or an inhibitor ☆ (2006) (21)
- Stereocontrolled double ring expansion of fused allylidenecyclopropanes. A novel route to hydroazulenes and other fused bicyclic systems (1993) (21)
- Competing hydride transfer and ene reactions in the aminoalkylation of 1-alkenes with N,N-dimethylmethyleniminium ions. A literature correction (1983) (20)
- Nucleophilic Acylation Utilizing an Ylid Intermediate. A Simple Synthesis of Benzaldehyde-d11 (1965) (20)
- Isotope effects after the rate-determining step. Role of rotational isomerism in a hydrogen transfer (1971) (19)
- Asymmetric Hydrogenation of Phenylthio Ketones with Chiral Ru(II) Catalysts (1997) (19)
- Competition between bond rotations and intramolecular hydrogen atom transfer as studied by the use of isotope effects (1968) (19)
- 1,5-hydrogen transfer during diazonium ion decomposition—IV: The copper catalyzed reaction. A Case of hydrogen atom or hydride ion transfer in the same system (1966) (19)
- Usefully functionalized products from conjugate addition of sulfur-stabilized anions to .alpha.-enones (1989) (19)
- Reductive cleavage and ring expansion of thiochromane and benzodihydrothiophene (1995) (18)
- Formation and uses of the dianion formally produced by conjugate addition of bis(phenylthio)methyl dianion to cyclohex-2-en-1-one: configurations and conformations of the products of conjugate addition of tris(phenylthio)methyllithium to carvone (1985) (18)
- Synthetic Approaches to Ipecac Alkaloids. I. A New Synthesis of 2-Pyridones1a,b (1956) (18)
- Rapid, high-yield cleavage of enol and dienol methyl ethers under mild conditions using chlorotrimethylsilane/sodium iodide (1981) (18)
- Control of stereochemistry in potassium alkoxide accelerated [1,3] sigmatropic rearrangements by the use of a crown ether for the apparent destruction of ion pairs. Evidence for a fragmentation mechanism in a vinylcyclobutane rearrangement (1983) (18)
- Highly efficient synthesis of alkylidene- and allylidenecyclopropanes (1988) (18)
- SYNTHETIC APPROACHES TO IPECAC ALKALOIDS. II. A SYNTHESIS OF 4-CARBOMETHOXY-5-ETHYL-2-METHYLPYRIDINE1, 2 (1955) (18)
- The Direction of Opening of Styrene Oxide by Acetic Acid1 (1962) (17)
- A convenient route to cyclopropanone dithioketals. The thiophenoxide anion as a nucleofugal leaving group (1978) (17)
- A novel one-flask cyclopropanation and vinylcyclopropanation method for .alpha.-enones. Copper(I)-induced .gamma.-thiophenoxide removal from conjugate adducts (1988) (17)
- Reactions of lithium bicyclo[1.1.0]butan-2-olates formed by carbenoid type decomposition of lithiothioacetal enolates: a novel concept for one-pot cyclopropanation of enones (1989) (17)
- A simple synthesis of 1-thiophenoxy-3-chloroalkenes useful synthons for acrolein and methacrolein (1975) (16)
- Rapid, room-temperature ullman-type coupling and ammonolyses of activated aryl halides in homogeneous solutions containing copper(I) ions (1975) (16)
- New tandem Zn-promoted Brook rearrangement/ene-allene carbocyclization reactions. (2005) (16)
- Sulfur-assisted ring expansion of the potassium salts of 1-vinylcyclobutanols. A versatile synthesis of cyclohexanones (1985) (15)
- Applications of highly enantioenriched alcohols bearing a phenylthio group in the preparation of ring compounds. The two-pot synthesis of an enantiopure spiroacetal pheromone bearing three chiral centers (1997) (15)
- The conversion of esters to phenyl thioesters by boron thiophenoxide and aluminum thiophenoxide (1979) (14)
- THE PHENOL OXIDATION OF A LIGAND BY COPPER(II) (1961) (14)
- Biogenetically inspired stereospecific synthesis of the dienylvinylcyclopropane gamete attractant dictyopterene B (1991) (14)
- The Lithium−Ene Cyclization and the Purported Carbanion-Induced Ene Cyclization (1999) (14)
- Tandem Zn-Brook Rearrangement/Ene-Allene Carbocyclization† (2009) (14)
- A New Type of Cationic Intermediate from an Intramolecular Hydrogen Transfer Reaction (1964) (14)
- Methods for the conversion of vinyl sulfides to aldehydes (1975) (14)
- Readily prepared 3-chloro-1-(phenylthio)propene, a versatile three-carbon annulating agent. (2009) (14)
- Tandem reductive lithiations — Carbanionic cyclizations yielding sulfur stabilized cyclopropyl- and cyclobutylcarbinyllithiums (1999) (14)
- A general preparative method for carbonyl-protected γ-lithioketones via reductive lithiation. Synthetic uses of the bishomoenolate equivalents (1994) (14)
- Efficient synthesis of 2-vinylcyclobutanones by the rearrangement of 1-methoxy-1-cyclopropylcarbinols under neutral conditions (1989) (13)
- 1-Methoxy-1-(phenylthio)cyclopropanes from olefins via the Pummerer rearrangement (1987) (13)
- Rapid amide cleavage assisted by a neighboring hydroxylamino function (1972) (13)
- Reductive lithiation of a trimethyl benzo-1,3-thiazoline: Generation of an α-amino tertiary carbanion and reactions with electrophiles (1995) (13)
- 1,5-Hydrogen Transfer during Diazonium Ion Decomposition. II. Formation of Five- and Seven-Member Nitrogen Heterocycles1,2 (1962) (13)
- An economical and convenient preparation of 2-(phenylthio)cyclobutanone, a synthetic equivalent of cyclobutanone (1981) (13)
- Preparation of 2-vinylcyclobutanones viam-chloroperbenzoic acid oxidation of allylidenecyclopropanes (1988) (13)
- Inversion of configuration in the displacement of lithium by hydrogen during a transannular 1,4-hydrogen transfer accompanying a [1,2]-Wittig rearrangement (1992) (13)
- The production of cyclopropanes from organosulfur compounds and a novel cyclopropane ring expansion (1996) (13)
- The Oxidative Decarboxylation of α-Halo Acids by Pyridine N-Oxide. A Degradative Method for Carboxylic Acids1 (1966) (12)
- A one-flask, high-yield, stereoselective synthesis of racemic endo-brevicomin (1983) (12)
- Reaction of 4-picoline N-oxide with acetic anhydride. Trapping of the cationic intermediate (1967) (12)
- The Question of a Benzene Cation Insertion Reaction. A Novel Intramolecular Electrophilic Substitution (1964) (12)
- One-step synthesis of complex cyclopropanone phenylthioketals by the reaction of sulfur-stabilized anions with ketene bis(phenylthio)acetal (1979) (11)
- Enantioselective Ring Expansionof Prolinols: An Efficient and Short Synthesis of 2-Phenylpiperidin-3-olDerivatives and 3-Hydroxypipecolic Acids (2009) (10)
- Allylic lithium oxyanionic directed and facilitated simmons-smith cyclopropanation: stereoselective synthesis of (+/-)-cis-sabinene hydrate and a novel ring expansion. (2001) (10)
- Reaction of pyridine N-oxide with acetic anhydride in anisole and in benzonitrile (1972) (10)
- Stereochemistry and mechanism of the base-induced loss of thiophenol from 1,1,3-tris(phenylthio)alkanes to form cyclopropanone dithioketals (1979) (9)
- Preparative methods for (Z)-2-methoxy-1-phenylthio-1,3-butadienes. Rearrangement during copper(I)-induced elimination of thiophenol from some γ,δ-unsaturated thioacetals (1980) (9)
- Preparation and remarkable reactivity of the elusive (1,1,3,3-tetramethylallyl)lithium (1992) (9)
- CHEMOSELECTIVE BEHAVIOR OF ENOLATE CARBENES DERIVED FROM DIANIONS OF ENOL THIOACETALS (1983) (9)
- Secondary orbital interactions determining regioselectivity in the Diels-Alder reaction. 5. Thio-substituted 1,3-butadienes (1974) (9)
- Computational study of the stereochemistry of intramolecular carbolithiation of an alkene by a secondary alkyllithium: stereochemistry change caused by a single THF molecule of solvation. (2007) (9)
- Diastero- and enantioselective intramolecular carbometalation reaction (2010) (9)
- A Convenient Stereospecific Synthesis of Axial Amines in Some Steroidal, Decalyl, and Cyclohexyl Systems1 (1962) (9)
- The superiority of properly prepared lithium 1-N,N-dimethylaminonaphthalenide (LDMAN) over other aromatic radical-anions for the generation of organolithiums by reductive lithiation☆ (2010) (8)
- Specifically Solvated Ion-Pair Intermediates in Nitrous Acid Deamination of an Axial Amine (1964) (8)
- A laboratory demonstration illustrating bioseparations using colorful proteins (2008) (8)
- Cumyl phenyl sulfide forms bicumyl instead of cumyllithium upon reductive lithiation. Thiophenoxide as a leaving group in nucleophilic substitution by SET (1997) (8)
- 2-Phenylthio-3-bromopropene, a valuable synthon, easily prepared by a simple rearrangement. (2006) (8)
- Carbene anion formation from a dithioacetal anion bearing an allylic oxyanion substituent at the 2 position. Divergent behavior of the dianion in ether and THF (1984) (8)
- Yield and selectivity enhancement by trimethylsilyl chloride in the conjugate addition of stabilized organolithiums (1995) (7)
- The Structures of the Isoisatogens1,2 (1965) (7)
- Fundamental Difference in Reductive Lithiations with Preformed Radical Anions versus Catalytic Aromatic Electron-Transfer Agents: N,N-Dimethylaniline as an Advantageous Catalyst. (2016) (7)
- Lithiothioacetals as carbenoids. Highly selective one-flask conversion of cyclohex-2-en-1-ones to lithium bicyclo[1.1.0]butan-2-olate intermediates (1988) (7)
- Base-induced ring closure of bis-dithioacetals via an apparent carbenoid. A novel route to functionalized cyclobutanes and cyclopentanes (1978) (7)
- SECONDARY ORBITAL INTERACTIONS DETERMINING REGIOSELECTIVITY IN THE DIELS-ALDER REACTION. 3. DISUBSTITUTED DIENES (1978) (7)
- α-HETEROATOM ORGANOLITHIUM COMPOUNDS BY REDUCTIVE LITHIATION OF SUBSTITUTED PHENYLTHIOETHERS USING LITHIUM 1-(DIMETHYLAMINO)NAPHTHALENIDE (LDMAN) (1986) (7)
- Consecutive decomposition modes for m-trifluoromethylphenylcopper in ether (1976) (6)
- A large chemical shift difference for geminal protons (1965) (6)
- Tris(phenylthio)methyllithium as a formyl anion equivalent in conjugate addition. Preparation of unprotected γ-ketoaldehydes. (1978) (6)
- 1,5-Hydrogen Transfer during Diazonium Ion Decomposition1,2 (1961) (5)
- The Stereoselective Reductions of Ketones to the Most Thermodynamically Stable Alcohols Using Lithium and Hydrated Salts of Common Transition Metals. (2015) (5)
- The Cyclopropylalkylidenecyclopropane Thermal Double Ring Expansion. A Novel Route to the Bicyclo[5.3.1]undecane Skeleton of the AB Ring System of Taxanes1 (1998) (5)
- Stereochemistry of elimination in deamination of the trans-2-decalylamines (1969) (5)
- Reaction of Allylmanganese(II) Reagents with Aldehydes (1995) (5)
- 1,5-Hydrogen Transfer during Diazonium Ion Decomposition. III. Kinetic Studies1-3 (1965) (5)
- Relationship between Substitution and Elimination in N-Nitrosoamide Deaminations. An Application of Isotope Effects Manifested after the Rate-Determining Step (1972) (5)
- Conversion of a saturated to an unsaturated acid by pyridine N-oxide (1973) (4)
- Oxidation of oxygen-labeled phenylacetic anhydride by pyridine N-oxide. Relative nucleophilicities of pyridine and pyridine N-oxide (1969) (4)
- The Configurational Relationships of the cis-β-Decalols and cis-β-Decalylamines1 (1964) (4)
- A CASE OF INTRAMOLECULAR ASSISTANCE OF AMIDE HYDROLYSIS BY A NEIGHBORING AMIDE GROUP1 (1961) (4)
- Copper(I) bromide - dimethyl sulfide complex - an alternative to copper(I) triflate for removal of the thiophenoxide group (1994) (4)
- Structural elucidation of the pentacyclic cinnoline obtained by the reaction of 1,4-naphthoquinone with hydrazine (1967) (3)
- Thermal rearrangement of 3-benzoyl-2,1-benzisoxazole to 2-phenyl-4H-3,1-benzoxazone in solution (1970) (3)
- Carbonyl-Protected β-Lithio Aldehydes and Ketones via Reductive Lithiation. A General Preparative Method for Remarkably Versatile Homoenolate Equivalents. (1992) (3)
- A Highly Efficient Conversionof a Simple Derivative of the Amino Acid Proline intoa Nearly Enantiomerically Pure N-Protected Allyl Amine: Useof Thionyl Chloride to Promote the Peterson Olefination (2011) (3)
- A route to aldehydes and ketones by a four-electron decarboxylative oxidation utilizing pyridine N-oxide (1965) (3)
- Small-scale synthesis of mevalonolactone and its 3-ethyl-2-14C homolog (1968) (3)
- The Versatile Phenylthio Group. A Powerful Aid in Synthesis (1993) (3)
- Reductive Lithiation in the Absence of Aromatic Electron Carriers. A Steric Effect Manifested on the Surface of Lithium Metal Leads to a Difference in Relative Reactivity Depending on Whether the Aromatic Electron Carrier Is Present or Absent. (2015) (3)
- Configurational retention in the silver ion catalyzed solvolysis of an alkyl bromide in acetonitrile (1973) (2)
- Deuterium isotope effects and the influence of solvent in the redox and rearrangement reactions of 2-picoline N-oxide and phenylacetic anhydride (1975) (2)
- Regio‐ and Enantioselective Iridium‐Catalyzed Allylation of Thiophenol: Synthesis of Enantiopure Allyl Phenyl Sulfides. (2011) (2)
- The use of complexing agents in the activation of copper for the Ullmann biaryl synthesis (1967) (2)
- The mechanisms of n-butyllithium induced β-cleavage of 2-methyltetrahydrofuran and oxepane (1993) (2)
- Di-5alpha-cholestan-3alpha-ylamine, a diaxial bis steroidal amine. (1968) (2)
- Enantio- and Diastereoselective Tandem Zn-Promoted Brook Rearrangement/Ene—Allene Carbocyclization Reaction. (2009) (2)
- A NEW METHOD FOR THE PREPARATION OF COLLOIDAL FERRIC HYDROXIDE. (2)
- The Preparation of Synthetically Useful Carbonyl‐Protected δ‐ and ε‐Lithio Ketones via Reductive Lithiation. (1998) (2)
- Asymmetric Hydrogenation of Phenylthio Ketones with Chiral Ru(II) Catalysts. (1997) (2)
- Synthesis of Asymmetric Cyclopentanes through a Domino Reaction (2009) (1)
- TWO-FLASK PREPARATION OF α-LITHIO CYCLIC ETHERS FROM Γ- AND Δ-LACTONES. REDUCTIVE LITHIATION AS A ROUTE, VIA RADICAL INTERMEDIATES, TO AXIAL 2-LITHIOTETRAHYDROPYRANS AND THEIR EQUILIBRATION TO THE EQUATORIAL ISOMERS (1984) (1)
- S-(+)-5-(Phenylthio)-2-pentanol and S-(+)-4-(Phenylthio)-2-butanol: Readily Prepared, Useful Additions to the Chirality Pool. Highly Enantioselective Syntheses of Naturally Occurring Spiroketal Pheromones. (1995) (1)
- Acid-catalyzed rearrangements of some 1,6-diketones (2000) (1)
- Generation, Some Synthetic Uses, and 1,2-Vinyl Rearrangements of Secondary and Tertiary Homoallyllithiums, Including Ring Contractions and A Ring Expansion. Remarkable Acceleration of the Rearrangement by an Oxyanionic Group. (2010) (1)
- New Tandem Zn-Promoted Brook Rearrangement/Ene—Allene Carbocyclization Reactions. (2006) (1)
- Tandem Reductive Lithiations — Carbanionic Cyclizations Yielding Sulfur Stabilized Cyclopropyl‐ and Cyclobutylcarbinyllithiums. (1999) (1)
- A General Diastereoselective Synthesis of Spiroacetals Related to Those in Ionophores via the Reaction of Lactones with Cerium(III) . gamma.‐Cerioalkoxide. MAD Reverses the Diastereoselectivity of the Addition of Methylmetallics to a β‐Keto Ether. (1994) (1)
- Deamination of the axial and equatorial trans-2-decalylamines by the N-nitrosoamide method in various solvents. Remarkable stereochemistry and efficiency of capture of a cationic intermediate by acetonitrile (1980) (1)
- PREPARATIVE METHODS FOR (Z)-2-METHOXY-1-PHENYLTHIO-1,3-BUTADIENES. REARRANGEMENT DURING COPPER(I)-INDUCED ELIMINATION OF THIOPHENOL FROM SOME Γ,Δ-UNSATURATED THIO ACETALS (1981) (1)
- The effect of ion-pairing on the course of decomposition of a diazonium salt (1964) (1)
- Synthetically Useful β-Lithioalkoxides from Reductive Lithiation of Epoxides by Aromatic Radical Anions. (1990) (1)
- RAPID, ROOM-TEMPERATURE ULLMANN-TYPE COUPLINGS AND AMMONOLYSES OF ACTIVATED ARYL HALIDES IN HOMOGENEOUS SOLUTIONS CONTAINING COPPER(I) IONS (1975) (1)
- Highly Efficient Terpenoid Pheromone Syntheses via Regio‐ and Stereocontrolled Processing of Allyllithiums Generated by Reductive Lithiation of Allyl Phenyl Thioethers. (1992) (0)
- Yield and Selectivity Enhancement by Trimethylsilyl Chloride in the Conjugate Addition of Stabilized Organolithiums. (1996) (0)
- DEOXYGENATION REACTIONS OF AMINE OXIDES AND SULFOXIDES. (1965) (0)
- The Magnesium—Ene Cyclization Stereochemically Directed by an Allylic Oxyanionic Group and Its Application to a Highly Stereoselective Synthesis of (.+‐.)‐Matatabiether. Allylmagnesium Compounds by Reductive Magnesiation of Allyl Phenyl Sulfides. (2001) (0)
- Generation, Rearrangements and Some Synthetic Uses of Bishomoallyllithiums. (1995) (0)
- Tandem Lithium—Ene Cyclization and Thiophenoxide Expulsion to Produce Fused Vinylcyclopropanes: First Observation of Allylic Lithium Oxyanion-Induced Reactivity and Stereoselectivity in Intramolecular Carbolithiation. (2000) (0)
- Usefully Functionalized Products from Conjugate Addition of Sulfur-Stabilized Anions to α-Enones. (1989) (0)
- A Novel One-Flask Cyclopropanation and Vinylcyclopropanation Method for α-Enones (I). Copper(I)-Induced γ-Thiophenoxide Removal from Conjugate Adducts. (1988) (0)
- Simple One-Pot Syntheses of Spiroketals and Oxaspirolactones by Addition of γ- and δ-Cerioalkoxides to Lactones and Cyclic Anhydrides. (1990) (0)
- 1,3‐Diols from Lithium β‐Lithioalkoxides Generated by the Reductive Lithiation of Epoxides: 2,5‐Dimethyl‐2,4‐Hexanediol (2003) (0)
- Preparation and Remarkable Reactivity of the Elusive (1,1,3,3-Tetramethylallyl)lithium. (1992) (0)
- Stereocontrolled Double Ring Expansion of Fused Allylidenecyclopropanes. A Novel Route to Hydroazulenes and Other Fused Bicyclic Systems. (1994) (0)
- TRIS(PHENYLTHIO)METHYLLITHIUM AS A FORMYL ANION EQUIVALENT IN CONJUGATE ADDITION. PREPARATION OF UNPROTECTED Γ-KETOALDEHYDES (1979) (0)
- Lithiothioacetals as Carbenoids. Highly Selective One-Flask Conversion of Cyclohex-2-en-1-ones to Lithium Bicyclo(1.1.0)butan-2-olate Intermediates. (1988) (0)
- BASE-INDUCED RING CLOSURE OF BIS(DITHIOACETALS) VIA AN APPARENT CARBENOID. A NOVEL ROUTE TO FUNCTIONALIZED CYCLOBUTANES AND CYCLOPENTANES (1979) (0)
- Erratum: Copper(I)-promoted thiophenoxide ionization in solution. A simple synthesis of vinyl phenyl sulfides (Journal of Organic Chemistry (1975) 40, (812)) (1975) (0)
- Stereochemical Analysis of Totally Stereoselective, Competing (1,2)‐ and (2,3)‐Wittig Rearrangements. Inversion at the Lithium‐Bearing Carbon Atom. (1992) (0)
- Efficient Synthetic Methodology for 1‐(Phenylthio)cyclopropylsilanes, Precursors of 1‐(Lithio)cyclopropylsilanes. (1985) (0)
- Carbanion Production by Reductive Cleavage of Carbon‐Sulfur and Carbon‐ Oxygen Bonds (1991) (0)
- Nitrous acid deamination of the axial and equatorial trans-2-decalylamines in mixed solvents (1980) (0)
- Preparation of 2-Vinylcyclobutanones via m-Chloroperbenzoic Acid: Oxidation of Allylidenecyclopropanes. (1988) (0)
- Highly Efficient Synthesis of Alkylidene- and Allylidenecyclopropanes. (1988) (0)
- Low Temperatures Favor Kinetic 1,4- over 1,2-Addition of Organolithiums to α-Enones. The Crucial Role of Ion Pairing. (1988) (0)
- CONTROL OF STEREOCHEMISTRY IN POTASSIUM ALKOXIDE ACCELERATED (1,3) SIGMATROPIC REARRANGEMENTS BY THE USE OF A CROWN ETHER FOR THE APPARENT DESTRUCTION OF ION PAIRS. EVIDENCE FOR A FRAGMENTATION MECHANISM IN A VINYLCYCLOBUTANE REARRANG (1984) (0)
- SECONDARY ORBITAL INTERACTIONS DETERMI (1979) (0)
- Efficient Synthesis of 2-Vinylcyclobutanones by the Rearrangement of 1-Methoxy-1-cyclopropylcarbinols Under Neutral Conditions. (1989) (0)
- 1-Phenylthio-1-(trimethylsiloxy)cyclopropanes via the Sila-Pummerer Rearrangement. (1988) (0)
- Synthetically Useful Dianions via Reductive Lithiation of Tetrahydrofurans by Aromatic Radical Anions. (1991) (0)
- Carbenoid-Type Base-Induced Ring Expansion of the Adducts of Cyclic Ketones with Bis(phenylthio)methyllithium. (1987) (0)
- ORGANOCOPPER INTERMEDIATES IN THE EXCHANGE REACTION OF ARYL HALIDES WITH SALTS OF COPPER(I), THE POSSIBLE ROLE OF COPPER(III) (1975) (0)
- Acid‐Catalyzed Rearrangements of Some 1,6‐Diketones. (2001) (0)
- Carbenoid Anion Behavior of Dilithio Derivatives of Thioacetal Alcohols. (1986) (0)
- Tandem Zn‐Brook Rearrangement/Ene‐Allene Carbocyclization. (2009) (0)
- Allylcerium(III) Compounds, Powerful New Synthetic Reagents. A New Stereocontrolled Approach to Olefins and Methylene-Interrupted Polyenes. (1987) (0)
- Reductive Lithiation of Sulfur‐Containing Heterocycles with Aromatic Radical Anions: Synthetic Applications. (1996) (0)
- A SYNTHESIS OF 2-VINYLCYCLOBUTANONES USING 1-METHOXYCYCLOPROPYLLITHIUM REAGENTS (1981) (0)
- SOME DEOXYGENATION REACTIONS OF AMINE OXIDES. (1963) (0)
- Use of Aromatic Radical‐Anions in the Absence of THF. Tandem Formation and Cyclization of Benzyllithiums Derived from the Attack of Homo‐ and Bishomoallyllithiums on α‐Methylstyrenes: Two‐Pot Synthesis of Cuparene. (2001) (0)
- A METHOD FOR METHYLIDENATION AND ETHYLIDENATION OF AN ALLYLIC THIO ETHER LEADING TO A 2,3-SIGMATROPIC REARRANGEMENT. FAILURE OF THE SIMMONS-SMITH REACTION IN THE PRESENCE OF THIO ETHERS (1982) (0)
- REMARKABLE STEREOCONTROL IN THE ADDITION OF AN ANION TO AN α‐ALKOXYALDEHYDE BY ENCOURAGING OR DISCOURAGING INTERNAL COMPLEXATION. APPLICATIONS TO BRIEF SYNTHESES OF THE MUS MUSCULUS (HOUSE MOUSE) PHEROMONE AND EXO‐BREVICOMIN (1985) (0)
- Reaction of Allylmanganese(II) Reagents with Aldehydes. (2010) (0)
- A SIMPLE PREPARATION OF SULFUR-STABILIZED CYCLOPROPYL ANIONS VIA REDUCTIVE LITHIATION OF CYCLOPROPANONE DITHIOKETALS (1979) (0)
- Copper(I) Bromide-Dimethyl Sulfide Complex - An Alternative to Copper( I) Triflate for Removal of the Thiophenoxide Group. (1995) (0)
- Breaking Down Chemical Weapons by Metal – Organic Frameworks Angewandte Chemie (2015) (0)
- Formation and Uses of the Dianion Formally Produced by Conjugate Addition of Bis(phenylthio)methyl Dianion to Cyclohex-2-en-1-one. (1986) (0)
- The Cyclopropylalkylidenecyclopropane Thermal Double Ring Expansion. A Novel Route to the Bicyclo[5.3.1]undecane Skeleton of the AB Ring System of Taxanes. (1998) (0)
- CONVERSION OF VINYL SULFIDES TO ALDEHYDES (1976) (0)
- APPLICATION OF COPPER(I)-INDUCED THIOPHENOXIDE REMOVAL TO RING EXPANSIONS OR CHAIN EXTENSIONS OF ALDEHYDES AND KETONES, DETECTION, ISOLATION, AND INDEPENDENT PREPARATION OF THE ALPHA-EPOXY THIOETHER INTERMEDIATE (1975) (0)
- Applications of Highly Enantioenriched Alcohols Bearing a Phenylthio Group in the Preparation of Ring Compounds. The Two-Pot Synthesis of an Enantiopure Spiroacetal Pheromone Bearing Three Chiral Centers. (1997) (0)
- (2,3)-SIGMATROPIC REARRANGEMENT OF AN IN SITU PREPARED YLIDE AND A THIO ETHER TO THIO ESTER CONVERSION AS KEY STEPS IN SHORT SYNTHESES OF SARKOMYCIN AND ITS PHENYL THIO ESTER (1985) (0)
- Cumyl Phenyl Sulfide Forms Bicumyl Instead of Cumyllithium Upon Reductive Lithiation. Thiophenoxide as a Leaving Group in Nucleophilic Substitution by SET. (1998) (0)
- KUPFER-CHINOLIN-DECARBOXYLIERUNG (1970) (0)
- COMPLETE REGIO- AND STEREOSPECIFICITY IN THE LEWIS ACID CATALYZED DIELS-ALDER REACTIONS OF (Z)-2-METHOXY-1-(PHENYLTHIO)-1,3-BUTADIENES. CONVERSION OF THE CS CONFIGURATION OF AN ADDUCT TO THE CC CONFIGURATION AT THE ALLYLIC POSITION B (1983) (0)
- A GENERAL PROCEDURE FOR PREPARING α-LITHIOSILANES. GENERALIZATION OF THE PETERSON OLEFINATION (1984) (0)
- Synthesis of Enantiopure Allyl Phenyl Sulfides (2010) (0)
- γ‐Lithio Alkoxides via Reductive Lithiation of Oxetanes by Aromatic Radical Anions. (1990) (0)
- Vinyl Sulfides from Thioacetals with Copper(I) Trifluoromethanesulfonate: (Z)‐2‐Methoxy‐1‐Phenylthio‐1,3‐Butadiene (2003) (0)
- Reactions of Lithium Bicyclo(1.1.0)butan-2-olates Formed by Carbenoid Type Decomposition of Lithiothioacetal Enolates. A Novel Concept for One-Pot Cyclopropanation of Enones. (1990) (0)
- A One-Flask, High-Yield, Stereoselective Synthesis of Racemic endo-Brevicomin. (1984) (0)
- Reductive Metallation. A General Preparative Method for Hydrocarbon Allylmetallic Compounds. (1986) (0)
- CYCLOPENTENONE AND CYCLOHEXENONE ANNULATIONS VIA ACID-CATALYZED 1,2- AND 1,3-ACYL MIGRATION OF 2-VINYLCYCLOBUTANONES. REARRANGEMENT ROUTE TO SPIRO- AND ANGULARLY SUBSTITUTED FUSED-CYCLOPENTENONES (1981) (0)
- Reductive Cleavage and Ring Expansion of Thiochromane and Benzodihydrothiophene. (1995) (0)
- Biogenetically Inspired Stereospecific Synthesis of the Dienylvinylcyclopropane Gamete Attractant Dictyopterene B. (1991) (0)
- Sulfur-Assisted Ring Expansion of the Potassium Salts of l-Vinylcyclobutanols. (1986) (0)
- Cerium(III) Chloride Remarkably Increases the Rates of Formation and Yields of Ketones in the Reaction of Lithium Carboxylates with Organolithiums. (1994) (0)
- 1‐Methoxy‐1‐(phenylthio)cyclopropanes from Olefins via the Pummerer Rearrangement. (1988) (0)
- Reductive Lithiation of a Trimethyl Benzo‐1,3‐thiazoline: Generation of an α‐Amino Tertiary Carbanion and Reactions with Electrophiles. (1995) (0)
- Synthesis of (-)-Kainic Acid (2008) (0)
- Regiochemical Control in the Reductive Cleavage of 2‐Alkylated Oxetanes by Use of Trialkylaluminums. Tertiary Organolithiums with γ‐Oxo Functinality. (1992) (0)
- A General Preparative Method for Carbonyl-Protected γ- Lithioketones via Reductive Lithiation. Synthetic Uses of the Bishomoenolate Equivalents. (1995) (0)
- SIMPLE SYNTHESIS OF 1-THIOPHENOXY-3-CHLORO ALKENES. USEFUL SYNTHONS FOR ACROLEIN AND METHACROLEIN (1976) (0)
- A Novel One-Flask Cyclopentannulation Involving a Dilithiomethane Equivalent as a β-Connector of Two Enones. A Highly Efficient Total Synthesis of (.+-.)-Hirsutene. (1993) (0)
- A Simple Method for Producing Cycloalkenyllithiums from Cycloalkanones via Reductive Lithiation of Enol Phenyl Thioethers. (2010) (0)
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