S. Kanemasa

发表

Enantioselective Enol Lactone Synthesis under Double Catalytic Conditions

J. Tanaka, Kennosuke Itoh, M. Hasegawa, 2005 .

CYCLOADDITION REACTION OF A NEW PERIPHERAL AZOMETHINE YLID TO SYMMETRICALLY SUBSTITUTED OLEFIN

S. Kanemasa, S. Kobira, S. Kajigaeshi, 1980 .

Synthesis of substituted pyridines by a cycloaddition route using nitrile oxides and homoallyl alcohols

J. Tanaka, S. Kanemasa, Y. Asai, 1991 .

Reusable nano-sized chiral bisoxazoline catalysts

J. Tanaka, S. Kanemasa, F. Ono, 2005 .

Synthesis of Hydroximoyl Chlorides from Aldoximes and Benzyltrimethylammonium Tetrachloroiodate (BTMA ICl4)

A. Kamimura, S. Kanemasa, Haruhiko Matsuda, 2000 .

Simple generation of nonstabilized azomethine ylides through decarboxylative condensation of α-amino acids with carbonyl compounds via 5-oxazolidinone intermediates

S. Takenaka, S. Kanemasa, O. Tsuge, 1987 .

Recent Advances in Azomethine Ylide Chemistry

S. Kanemasa, O. Tsuge, 1989 .

Double Catalytic Activation with Chiral Lewis Acid and Amine Catalysts

K. Ito, S. Kanemasa, 2004 .

Enantioselective conjugate additions of aldoximes to 3-crotonoyl-2-oxazolidinone and 1-crotonoyl-3-phenyl-2-imidazolidinone catalyzed by the aqua complex between R,R-DBFOX/Ph and zinc(II) perchlorate

S. Kanemasa, Kimitaka Nakama, S. Seki, 2002 .

ASYMMETRIC CONJUGATE ADDITION OF THIOLS TO A 3-(2-ALKENOYL)-2-OXAZOLIDINONE CATALYZED BY THE DBFOX/PH AQUA COMPLEX OF NICKEL(II) PERCHLORATE

S. Kanemasa, E. Wada, and Yoji Oderaotoshi, 1999 .

Enantioselective conjugate radical addition reactions mediated by chiral Lewis acid complexes of (R,R)-4,6-dibenzofurandiyl-2,2′-bis(4-phenyloxazoline) (DBFOX/Ph)

D. Curran, U. Iserloh, S. Kanemasa, 1999 .

Temperature dependent 1H NMR study of the substrate complex derived from zinc(II) perchlorate, (R,R)-4,6-dibenzofurandiyl-2,2′-bis(4-phenyloxazoline), and 3-acetyl-2-oxazolidinone. Evidence for octahedral structure of the substrate complex

J. Tanaka, S. Kanemasa, Yoji Oderaotoshi, 1998 .

Transition-Metal Aqua Complexes of 4,6-Dibenzofurandiyl-2,2‘-bis(4-phenyloxazoline). Effective Catalysis in Diels−Alder Reactions Showing Excellent Enantioselectivity, Extreme Chiral Amplification, and High Tolerance to Water, Alcohols, Amines, and Acids

D. Curran, Hidetoshi Yamamoto, J. Tanaka, 1998 .

Metallic base-induced and Lewis acid-catalyzed nitrone cycloadditions to allyl alcohol dipolarophiles. Highly effective regio- and stereocontrol

S. Kanemasa, E. Wada, T. Tsuruoka, 1993 .

N-(Trimethylsilylmethyl)pyridinium trifluoromethanesulfonates as facile precursors for nonstabilized pyridinium methylides.

S. Takenaka, S. Kanemasa, O. Tsuge, 1984 .

NEW C–C BOND FORMATION WITH PYRIDINIUM METHYLIDE: HYDROMETHYLENATION OF OLEFIN

S. Takenaka, S. Kanemasa, O. Tsuge, 1984 .

Highly enantioselective catalytic fluorination and chlorination reactions of carbonyl compounds capable of two-point binding.

N. Shibata, Shuichi Nakamura, J. Kohno, 2005, Angewandte Chemie.

Cycloaddition Reactions of Highly Stabilized Isoquinolinium Methylides to Nonactivated Olefins and Electron-Rich Olefins

S. Takenaka, S. Kanemasa, O. Tsuge, 1988 .

Stereochemical study on 1,3-dipolar cycloaddition reactions of heteroaromatic N-ylides with unsymmetrically substituted olefinic dipolarophiles

S. Takenaka, S. Kanemasa, O. Tsuge, 1985 .

Stereochemical study on 1,3-dipolar cycloaddition reactions of heteroaromatic N-ylides with symmetrically substituted cis and trans olefins.

S. Takenaka, S. Kanemasa, O. Tsuge, 1985 .

Chiral DBFOX/Ph complex catalyzed enantioselective nitrone cycloadditions to alpha,beta-unsaturated aldehydes.

S. Kanemasa, Yoji Oderaotoshi, M. Shirahase, 2004, Organic letters.

One-pot synthesis of N-[(trimethylsilyl)methyl]imines and (trimethylsilyl)methyl-substituted heterocumulenes from (trimethylsilyl)methyl azide

S. Kanemasa, O. Tsuge, Koyo. Matsuda, 1984 .

Stereoselectivity of Cydoaddition of N-(Cyanomethyl)- and N-(α-Cyanobenzyl)imines with Olefinic Dipolarophiles. Synthetic Equivalents of Nitrile Ylide 1,3-Dipoles

K. Ueno, S. Kanemasa, O. Tsuge, 1986 .

Desymmetrization-like catalytic enantioselective fluorination of malonates and its application to pharmaceutically attractive molecules.

N. Shibata, Shuichi Nakamura, J. Nagai, 2008, Angewandte Chemie.

REACTIONS OF CYCLIC ENAMINES WITH DICYANOMETHYLENECYCLOPROPENES. FORMATION OF MEDIUM RING COMPOUNDS AND TRANSANNULATION TO FULVENES

S. Okita, S. Kanemasa, O. Tsuge, 1982 .

Fluoride-catalyzed aldol reaction of ethyl trimethylsilyldiazoacetate with aldehydes leading to ethyl α-diazo-β-hydroxy esters and rhodium catalyzed decarboxylative rearrangement of diazo urethanes leading to β- amino acrylates

S. Kanemasa, E. Wada, Takahiro Araki, 1999 .

Ab initio study of Lewis acid catalyzed nitrone cycloaddition to electron deficient alkenes. Does a Lewis acid catalyst change the reaction mechanism

J. Tanaka, S. Kanemasa, 2001 .

Mesoionic compounds. 49. Ring annulation with heterocyclic ylides. Annulation of pyridones to the imidazole and 1,2,4-triazole systems

K. T. Potts, S. Kanemasa, 1980 .

Metal-Assisted Stereocontrol of 1,3-Dipolar Cycloaddition Reactions

S. Kanemasa, 2002 .

Triethylamine-Mediated Generation of a Synthetic Equivalent of Parent Azomethine Imine by Condensation of Ethyl 3-Benzylcarbazate with Paraformaldehyde

Naoki Tomoshige, S. Kanemasa, O. Tsuge, 1989 .

A new synthetic access to N-alkylated nitrones through Lewis acid-catalyzed conjugate additions of aldoximes

S. Kanemasa, Kimitaka Nakama, S. Seki, 2001 .

Metal ion-mediated diastereoface-selective 1,3-dipolar cycloaddition of nitrile oxides with dipolarophiles bearing an oxazolidinone chiral auxiliary

Hidetoshi Yamamoto, M. Hasegawa, S. Kanemasa, 2000 .

First Successful Metal Coordination Control in 1,3-Dipolar Cycloadditions. High-Rate Acceleration and Regio- and Stereocontrol of Nitrile Oxide Cycloadditions to the Magnesium Alkoxides of Allylic and Homoallylic Alcohols

A. Kamimura, K. Hori, S. Kanemasa, 1994 .

Sequential Reactions of Michael Addition and Peterson Condensation of 1-Silylvinyl Ketones with Grignard Reagents: Study of Stereoselectivity

J. Tanaka, S. Kanemasa, O. Tsuge, 1989 .

New chiral auxiliaries based on conformation control, a C2-symmetric 2,2-dimethylimidazolidine and 4-chiral, 2,2-dialkyloxazolidines. Synthesis and conformational analysis of acrylamide derivatives

K. Onimura, S. Kanemasa, 1992 .

Diastereoselective cycloaddition of N-lithiated azomethine ylides to (E)-α,β-unsaturated esters bearing a C2-symmetric imidazolidine chiral controller

T. Sakurai, Hidetoshi Yamamoto, J. Tanaka, 1991 .

Enantioselective enol lactone synthesis under double catalytic conditions.

J. Tanaka, Kennosuke Itoh, M. Hasegawa, 2005, Organic letters.

Cationic Aqua Complexes of the C2-Symmetric trans-Chelating Ligand (R,R)-4,6-Dibenzofurandiyl-2,2′-bis(4-phenyloxazoline). Absolute Chiral Induction in Diels-Alder Reactions Catalyzed by Water-Tolerant Enantiopure Lewis Acids

D. Curran, Hidetoshi Yamamoto, J. Tanaka, 1997 .

A new method for enol lactone synthesis by a Michael addition/cyclization sequence

Kennosuke Itoh, S. Kanemasa, 2003 .

Molecular sieves 4A work to mediate the catalytic metal enolization of nucleophile precursors: application to catalyzed enantioselective Michael addition reactions

M. Hasegawa, S. Kanemasa, F. Ono, 2008 .

Catalytic activation of nucleophile precursors with metal acetates in alcohol media and applications to enantioselective Michael addition reactions

J. Tanaka, M. Hasegawa, S. Kanemasa, 2008 .

Catalytic activation through metal enolization of nucleophile precursors and synthetic applications to enantioselective Michael additions.

M. Hasegawa, S. Kanemasa, F. Ono, 2007, Chemical record.

Lewis acid-catalyzed enantioselective hydroxylation reactions of oxindoles and beta-keto esters using DBFOX ligand.

N. Shibata, Shuichi Nakamura, J. Nagai, 2006, Journal of the American Chemical Society.

Synthesis of (diethoxyphosphoryl) acetonitrile oxide and its cycloaddition to olefins. Synthetic applications to 3,5-disubstituted 2-isoxazolines

H. Suga, S. Kanemasa, O. Tsuge, 1987 .

SYNTHESIS OF A NEW PHOSPHORUS-FUNCTIONALIZED NITRILE OXIDE, α-(DIETHYLPHOSPHONO)ACETONITRILE OXIDE, AND CYCLOADDITION LEADING TO 3-(DIETHYLPHOSPHONOMETHYL)-Δ2-ISOXAZOLINES

H. Suga, S. Kanemasa, O. Tsuge, 1986 .

Simple Generation of Ester-Stabilized Azomethine Ylides from 2-Amino Esters and Carbonyl Compounds. Stereochemistry of Their Cycloadditions

S. Takenaka, K. Ueno, S. Kanemasa, 1987 .

Effective Enantiocontrol in Conjugate Additions of Organocuprates. Highly Selective 1,5-Chiral Induction in the Conjugate Additions of Cuprates to .alpha.,.beta.-Unsaturated Amide Derivatives of 2,2-Dimethyloxazolidine Chiral Auxiliaries

K. Onimura, S. Kanemasa, H. Suenaga, 1994 .

Highly lk-selective asymmetric nitrile oxide cycloadditions to a C2-symmetric 1,3-diacryloyl-2,2-dimethylimidazolidine and 4-chiral 3-acryloyl-2,2-dialkyloxazolidines

K. Onimura, S. Kanemasa, 1992 .

22,-Dimethyl-4-phenyloxazoline and 2,2-dimethyl-4,5-diphenylimidazolidine as new chiral auxiliaries. Applications to asymmetric nitrile oxide cycloadditions

K. Onimura, J. Tanaka, S. Kanemasa, 1991 .

Nitrone cycloaddition reactions to α,β-unsaturated carbonyl acceptors catalyzed by a pinhole Lewis acid catalyst. Dramatic rate acceleration and improvement of regioselectivity and diastereoselectivity

S. Kanemasa, M. Shirahase, N. Ueno, 2002 .

A New Annulation Reagent, 2-Oxo-3-alkenylphosphonates. Reactions with Carbonyl-Stabilized Carbanions or Silyl Enol Ethers Leading to Cyclohexenones

S. Kanemasa, E. Wada, J. Funakoshi, 1992 .

Enantioselective Michael addition reactions of malononitrile catalyzed by chiral Lewis acid and achiral amine catalysts

Kennosuke Itoh, S. Kanemasa, Yoji Oderaotoshi, 2003 .

Enantioselective Michael additions of nitromethane by a catalytic double activation method using chiral lewis Acid and achiral amine catalysts.

Kennosuke Itoh, S. Kanemasa, 2002, Journal of the American Chemical Society.

dl-Selective reductive coupling/Dieckmann condensation sequence of α,β-unsaturated amides with samarium(II) iodide/HMPA. Synthesis of a new ligand, trans-1,2-cyclopentanediyl-2,2'-biphenol

Hidetoshi Yamamoto, S. Kanemasa, Shigeru Kobayashi, 1996 .

Highly Endo- and Enantioselective Asymmetric Nitrone Cycloadditions Catalyzed by the Aqua Complex of 4,6-Dibenzofurandiyl-2,2‘-bis(4-phenyl- oxazoline)−Nickel(II) Perchlorate. Transition Structure Based on Dramatic Effect of MS 4A on Selectivities

J. Tanaka, S. Kanemasa, Yoji Oderaotoshi, 1998 .

Enantioselective preparation of 3,4,5-trisubstituted 4,5-dihydroisoxazoles and their stereoselective elaboration of 5-side chain

Y. Fujimoto, A. Kakehi,, A. Kamimura, 2002 .

Recent advances in synthetic applications of nitrile oxide cycloaddition (1981-1989)

S. Kanemasa, O. Tsuge, 1990 .

Reactions of 2-methylenebenzothiazolines with methylenecyclopropenes.

M. Tanaka, S. Kanemasa, O. Tsuge, 1983 .

Studies of Acyl and Thioacyl Isocyanates. X. The Cycloaddition Reaction of Benzoyl and Thiobenzoyl Isocyanates with Benzaldazines

S. Kanemasa, O. Tsuge, 1972 .

1‐Phenylthio‐1‐trimethylsilylethylene

S. Kanemasa, 2001 .

Hydroalumination and related reactions of phenyl 1-(trimethylsilyl)propadienyl sulfide followed by quenching with carbonyl compounds

J. Tanaka, S. Kanemasa, O. Tsuge, 1990 .

A Michael addition and Peterson olefination sequence using 1-silylethenyl sulfides and sulfoxide.

J. Tanaka, S. Kanemasa, O. Tsuge, 1988 .

Nucleophilic Aminomethylation of Aldehydes with α-Amino Alkylsilanes

J. Tanaka, S. Kanemasa, O. Tsuge, 1985 .

A SILYL-FUNCTIONALIZED ALKYL AZIDE, TRIMETHYLSILYLMETHYL AZIDE; SYNTHESIS AND CYCLOADDITION REACTION TO ACETYLENIC DIPOLAROPHILES

S. Kanemasa, O. Tsuge, Koyo. Matsuda, 1983 .

Bisoxazoline and Bioxazoline Chiral Ligands Bearing 4-Diphenylmethyl Shielding Substituents. Diels-Alder Reaction of Cyclopentadiene with 3-Acryloyl-2-oxazolidinone Catalyzed by the Aqua Nickel(II) Complex

K. Adachi, Hidetoshi Yamamoto, S. Kanemasa, 2000 .

Enantioselective Michael additions of nitromethane by a catalytic double activation method using chiral lewis Acid and achiral amine catalysts.

Kennosuke Itoh, S. Kanemasa, 2002, Journal of the American Chemical Society.

Chiral Lewis Acid-Catalyzed Asymmetric Diels-Alder Reactions of (E)-1-Phenylsulfonyl-3-alken-2-ones with Cyclopentadiene

W. Pei, S. Kanemasa, E. Wada, 1994 .

Chiral Lewis Acid-Catalyzed Asymmetric Hetero Diels-Alder Reaction of (E)-2-Oxo-1-phenylsulfonyl-3-alkenes with Vinyl Ethers

S. Kanemasa, E. Wada, H. Yasuoka, 1994 .

Summer School in Moji-ko

T. Kitamura, H. Nagashima, S. Kanemasa, 2001 .

Metal‐Assisted Stereocontrol of 1,3‐Dipolar Cycloaddition Reactions.

S. Kanemasa, 2002 .

Nonstabilized Azomethine Ylides Generated by Decarboxylative Condensation of α-Amino Acids. Structural Variation, Reactivity, and Stereoselectivity

S. Kanemasa, O. Tsuge, K. Sakamoto, 1989 .

Magnesium Bromide-Promoted E/Z-Isomerization of Carbonyl-Conjugated Nitrones and Highly Stereo-and Regioselective Cycloadditions to Allylic Alcohol Dipolarophiles

S. Kanemasa, T. Tsuruoka, 1995 .

A Convenient Route to 2-Lithio-1,3-butadiene from Chloroprene via 2-Stannyl-1,3-butadiene

I. Fujiwara, S. Kanemasa, O. Tsuge, 1985 .

Double Diels-Alder Reaction of trans-3-Methylene-1,4-hexadiene and 1-Methyl-3-methylene-4-pentenyl Tosylate

S. Kanemasa, O. Tsuge, E. Wada, 1986 .

Regioselective cycloadditions of N-protonated azomethine ylides and 2-azaallyl anions generated from N-(silylmethyl) thioimidates, synthetic equivalents of nonstabilized nitrile ylides

Toshiaki Yamada, S. Kanemasa, O. Tsuge, 1987 .

Synthetic Versatility of N-(Silylmethyl)imines: Water-Induced Generation of N-Protonated Azomethine Ylides of Nonstabilized Type and Fluoride-Induced Generation of 2-Azaallyl Anions

S. Kanemasa, O. Tsuge, Koyo. Matsuda, 1986 .

A new general route to N-protonated azomethine ylides from N-(silylmethyl)amidines and -thioamides. Cycloaddition of synthetic equivalents of nitrile ylides

S. Kanemasa, O. Tsuge, Koyo. Matsuda, 1986 .

Water-induced formation of azomethine ylide 1,3-dipole. Stereospecific and regioselective cycloaddition reactions.

S. Kanemasa, O. Tsuge, Koyo. Matsuda, 1984 .

Lewis acid-catalyzed reactions of ethyl diazoacetate with aldehydes. Synthesis of α-formyl esters by a sequence of aldol reaction and 1,2-nucleophilic rearrangement

S. Kanemasa, E. Wada, Takahiro Araki, 1999 .

CROSS DIENE-TRANSMISSIVE DIELS-ALDER CYCLOADDITION REACTION OF BIS(SILYLOXY) CROSS-CONJUGATED TRIENES.

S. Kanemasa, O. Tsuge, E. Wada, 1984 .

3-BENZYLIDENE-2,4-BIS(TRIMETHYLSILYLOXY)-1,4-PENTADIENE; SYNTHESIS AND ITS DIENE-TRANSMISSIVE DIELS–ALDER REACTION

S. Kanemasa, O. Tsuge, E. Wada, 1983 .

A NEW METHOD FOR NUCLEOPHILIC OXYMETHYLATION USING α-ALKOXYSlLANES. SYNTHESIS OF UNSYMMETRICAL 1,2-DIOLS

J. Tanaka, S. Kanemasa, O. Tsuge, 1984 .

Generation of Nitrile Oxides Through O-Metalation of Hydroximoyl Chlorides. Chelation-Controlled syn-Selective Cycloaddition of Nitrile Oxides to α-Substituted Allyl Alcohols.

Hidetoshi Yamamoto, S. Kanemasa, Shigeru Kobayashi, 1991 .

Enantioselective preparation of 3,4,5-trisubstituted-4,5-dihydroisoxazoles and 4-substituted-5,6-dihydro-4H-[1,2]-oxazines by nitrile oxide cycloaddition to α-silyl allyl alcohols

A. Kakehi,, A. Kamimura, S. Kanemasa, 1999 .

C2-symmetric 1,2-diamine/copper(II) trifluoromethanesulfonate complexes as chiral catalysts. Asymmetric cyclopropanations of styrene with diazo esters

Satoshi Hamura, Etsuko Harada, Hidetoshi Yamamoto, 1994 .

Asymmetric Cycloaddition of N-Metalated Azomethine Ylides with the Optically Active α,β-Unsaturated Esters Derived from α-Amino Acids

Hidetoshi Yamamoto, S. Kanemasa, T. Sakurai, 1990 .

Acid-Catalyzed Transformation of α-Hydroxy-γ-oxo Acetals to γ-Oxo Esters. A Novel Deconjugation of 4-Oxo-2-alkenal Acetals

H. Suga, S. Kanemasa, O. Tsuge, 1989 .

Synthesis of Hexahydroindenones through a Diels–Alder Cycloaddition and Nazarov Cyclization Sequence of Triene Alcohols

I. Fujiwara, S. Kanemasa, O. Tsuge, 1987 .

Exclusively endo-selective lewis acid-vatalyzed hetero diels-alder reactions of (E)-1-phenylsuifonyl-3-alken-2-ones with vinyl ethers

W. Pei, S. Kanemasa, E. Wada, 1996 .

High enantiocontrol of michael additions by use of 2:2-dimethyloxazolidine chiral auxiliaries. Exclusively ul,lk-1,4-inductive michael additions of the lithium (z)-enolate of (s)-4-benzyl-2,2,5,5-tetramethyl-3-propanoyl-oxazolidine to α,β-unsaturated esters

Hidetoshi Yamamoto, S. Kanemasa, S. Yoshinaga, 1995 .

Chirality control by the aid of 2:2-dimethyloxazolidine chiral auxiliaries. Highly 1:4-chiral inductive asymmetric alkylations of amide enolates

T. Kikukawa, K. Onimura, Hidetoshi Yamamoto, 1995 .

Asymmetric anti-selective aldol reactions of titanium Z-enolates derived from N-alkylideneglycinamides bearing a 2,2-dimethyloxazolidine chiral controller

S. Kanemasa, A. Tatsukawa, Takashi Mori, 1993 .

Triethylamine‐Mediated Generation of a Synthetic Equivalent of Parent Azomethine Imine by Condensation of Ethyl 3‐Benzylcarbazate with Paraformaldehyde.

Naoki Tomoshige, S. Kanemasa, O. Tsuge, 1990 .

Lithium bromide-triethylamine induced cycloaddition of N-alkylidene 2-amino esters and amides to electron-deficient olefins with high regio- and stereoselectivity

S. Kanemasa, O. Tsuge, M. Yoshioka, 1988 .

Double catalytic enantioselective Michael addition reactions of tertiary nucleophile precursors—tertiary/quaternary and quaternary/quaternary carbon–carbon bond formations

S. Kanemasa, H. Yanagita, Kazuhiro Kodama, 2006 .

syn-selective Michael addition of lithiated 2-alkoxyacetates and -acetamides to α,β-unsaturated carbonyl compounds

S. Kanemasa, E. Wada, M. Nomura, 1991 .

Michael Addition of Acyclic Lithium 1,3-Dien-2-olates with α,β-Unsaturated Esters, Ketones, and Diesters

S. Kanemasa, E. Wada, M. Nomura, 1991 .

Metallic Base-Induced Cycloadditions of N-(1-Cyanoalkyl)imines via N-Metalated Azomethine Ylides: Enhanced Reactivity and High Regio- and Stereoselectivity

K. Ueno, S. Kanemasa, O. Tsuge, 1987 .

An Entry to 5-(1-Alkenyl)-3(2H)-furanones through Cycloaddition of Phosphorus-Functionalized Nitrile Oxide to Acetylene Alcohols. An Effective Synthesis of Geiparvarin

H. Suga, S. Kanemasa, O. Tsuge, 1987 .

Semiempirical molecular orbital study on the transition states for the anti-selective Michael addition reactions of the lithium Z-enolates of N-alkylideneglycinates to α,β-unsaturated esters

J. Rudziǹski, S. Kanemasa, A. Tatsukawa, 1994 .

Synthesis of Chiral Isoxazoline Derivatives by Highly Diastereoface-Selective 1,3-Dipolar Cycloaddition of Nitrile Oxides Mediated by Magnesium Bromide and Ytterbium Trifluoromethanesulfonate †

Hidetoshi Yamamoto, M. Hasegawa, S. Kanemasa, 2003 .

Metal Ion Mediated Diastereoface-Selective 1,3-Dipolar Cycloaddition of Nitrile Oxides with Dipolarophiles Bearing an Oxazolidinone Chiral Auxiliary.

Hidetoshi Yamamoto, M. Hasegawa, S. Kanemasa, 2000 .

Catalytic efficiency, ligand acceleration, and concentration effect in magnesium ion mediated 1,3-dipolar cycloadditions of mesitonitrile oxide to allylic alcohols

Hidetoshi Yamamoto, S. Kanemasa, Kumi Okuda, 1997 .

Interactions between 1, 3-Dipoles and Metal Ions. Stereo- and Regiocontrol of 1, 3-Dipolar Cycloaddition Reactions

S. Kanemasa, 1995 .

A New Synthetic Access to N-Alkylated Nitrones Through Lewis Acid Catalyzed Conjugate Additions of Aldoximes.

S. Kanemasa, Kimitaka Nakama, S. Seki, 2001 .

Molecular sieve 4 Å generates nitrile oxides from hydroximoyl chlorides. Development of catalyzed enantioselective nitrile oxide cycloadditions to monosubstituted alkenes

M. Hasegawa, S. Kanemasa, F. Ono, 2009 .

Metal ion-mediated diastereoface-selective nitrone cycloadditions. Reaction mechanism for the reversal of regloselectivity observed in the magnesium and zinc ion-mediated nitrone cycloadditions of allylic alcohols

Hidetoshi Yamamoto, S. Kanemasa, T. Tsuruoka, 1995 .

A. Kamimura, K. Hori, S. Kanemasa, 1994 .

Stereoselective Michael addition of the imines of α-amino esters in the presence of lithium bromide/1,8-diazabicyclo[5.4.0]undec-7-ene

S. Kanemasa, E. Wada, O. Uchida, 1990 .

REACTIONS OF NITRONES BEARING AN OLEFINIC DIPOLAROPHILE WITH DIMETHYL ACETYLENEDICARBOXYLATE. INTER- AND INTRAMOLECULAR DOUBLE 1,3-DIPOLAR CYCLOADDITIONS

K. Ueno, S. Kanemasa, O. Tsuge, 1984 .

STEREOSELECTIVITY OF DIENE-TRANSMISSIVE DIELS-ALDER REACTION; CYCLOADDITION REACTION OF CROSS-CONJUGATED TRIENE SYSTEM TO OLEFINIC DIENOPHILES

S. Kanemasa, O. Tsuge, E. Wada, 1983 .

A Diels–Alder Cycloaddition and Electrocyclization Sequence as a New [6.5] Annelation Method to Benzene Ring

S. Kanemasa, O. Tsuge, E. Wada, 1986 .

TWO SIX-MEMBERED RINGS ANNELATION TO CYCLIC KETONES THROUGH TWO SEQUENTIAL DIELS–ALDER REACTIONS

S. Kanemasa, O. Tsuge, E. Wada, 1984 .

Reactions of 1,4-bis(trimethylsilyl)-1,4-dihydropyridines with carbonyl compounds : A new method for regioselective synthesis of 3-alkylpyridines.

J. Tanaka, S. Kanemasa, O. Tsuge, 1987 .

MICHAEL ADDITION-PETERSON OLEFINATION SEQUENCE OF METHYL 2-(TRIMETHYLSILYL)ACRYLATE AS A CONVENIENT METHOD FOR CONSECUTIVE FORMATION OF CARBON-CARBON SINGLE AND DOUBLE BONDS

Y. Ninomiya, S. Kanemasa, O. Tsuge, 1984 .

Lewis Acid Coordinated Nitrile Oxide and Nitrile Imine 1,3-Dipoles. syn-Selective Cycloadditions to 2-(1-Hydroxyalkyl)acrylates

S. Kanemasa, Shigeru Kobayashi, 1993 .

Asymmetric Dipolar Cycloaddition of Nitrile Oxides to the α,β-Unsaturated Esters Bearing an Imidazolidine Chiral Controller at the β-Position

Takashi Hayashi, Hidetoshi Yamamoto, S. Kanemasa, 1991 .

Stepwise sequence of double Diels-Alder reaction of cross-conjugated triene equivalent

S. Kanemasa, O. Tsuge, E. Wada, 1984 .

Peterson Olefination of (α-Methoxybenzyl)silane with Aldehydes and Ketones Leading to Vinyl Ethers

J. Tanaka, S. Kanemasa, O. Tsuge, 1985 .

Highly diastereoselective Michael addition of lithiated camphor imines of glycine esters to α,β-unsaturated esters. Synthesis of optically pure 5-oxo-2,4-pyrrolidinedicarboxylates of unnatural stereochemistry

S. Kanemasa, A. Tatsukawa, E. Wada, 1991 .

Horner–Emmons Olefination of 4-Hydroxy-2-oxoalkylphosphonates and Related Compounds: Applications to the Syntheses of (±)-Gingerol, (±)-Yashabushiketol, and (±)-Dihydroyashabushiketol

H. Suga, S. Kanemasa, O. Tsuge, 1987 .

Anion radical-induced desilylation of organosilane. Reactions of benzylsilanes with aldehydes and related compounds in the presence of butyllithium or lithium metal

J. Tanaka, S. Kanemasa, O. Tsuge, 1985 .

A Michael addition and alkylation sequence using methyl 2-(trimethylsilyl)-propenoate. Stereoselective synthesis of α-silyl esters

J. Tanaka, Y. Ninomiya, S. Kanemasa, 1990 .

Sequential Reactions of Michael Addition and Peterson Condensation of 1-Silylvinyl Ketones with Grignard Reagents: Study of Stereoselectivity.

J. Tanaka, S. Kanemasa, O. Tsuge, 1989 .

Regioselective alkyl group introduction at the 3-position of pyridine via 1,4-bis(trimethylsilyl)-1,4-dihydropyridine

J. Tanaka, S. Kanemasa, O. Tsuge, 1984 .

Methyl (4R,5R)‐(E)‐3‐(1,3‐Dimethyl‐4,5‐diphenyl‐2‐imidazolidinyl)propenoate

S. Kanemasa, 2001 .

Michael Addition and Alkylation of 2-Azaallyl Anions Derived from N-(1-Cyanoalkyl)imines, and Stereoselective Cyclization of Imine Esters or Ketones Leading to 1-Pyrrolines

Shuji Kanemasa, Otohiko Tsuge, Kazunori Ueno, 1987 .

Synthesis of Heterocycles Using Silylmethyl Heterocumulenes

S. Kanemasa, O. Tsuge, Koyo. Matsuda, 1986 .

N-PROTONATED AZOMETHINE YLIDES WITH A LEAVING GROUP AS SYNTHETIC EQUIVALENTS FOR NONSTABILIZED NITRILE YLIDES

S. Kanemasa, O. Tsuge, Koyo. Matsuda, 1985 .

Generation of nonstabilized thiazolium and 2-methylthiazolium methylides.

S. Kanemasa, O. Tsuge, S. Kuraoka, 1985 .

Water-induced azomethine ylide generation from N-(silylmethyl)thioimidates, synthetic equivalents of nonstabilized nitrile ylides

Toshiaki Yamada, S. Kanemasa, O. Tsuge, 1985 .

anti-selective aldol reactions of titanium enolates of n-alkylideneglycinates. Stereoselective synthesis of anti-isomers of β-hydroxy-α-amino Esters

S. Kanemasa, A. Tatsukawa, E. Wada, 1993 .

(S)‐4‐Benzyl‐2,2,5,5‐tetramethyloxazolidine

S. Kanemasa, 2001 .

New Chiral Auxiliaries Based on Conformation Control, a C2-Symmetric 2, 2-Dimethylimidazolidine and 4-Chiral 2,2-Dialkyloxazolidines. Synthesis and Conformational Analysis of Acrylamide Derivatives.

K. Onimura, S. Kanemasa, 1993 .

Generation of an N-Sodioazomethine Ylide and Its Cycloadditions with α,β-Unsaturated Esters

S. Kanemasa, O. Tsuge, M. Yoshioka, 1989 .

Cycloaddition vs. Michael Addition in the Metal Halide/Amine-Induced Reactions of α-(Alkylideneamino) Esters with Electron-Deficient Olefins

S. Kanemasa, O. Tsuge, M. Yoshioka, 1989 .

Diastereoselective Cycloaddition of N-Lithiated Azomethine Ylides to E- α,β-Unsaturated Esters Bearing a C2-Symmetric Imidazolidine Chiral Controller.

T. Sakurai, Hidetoshi Yamamoto, J. Tanaka, 1991 .

Asymmetric Michael Addition of the N-Alkylidene Derivative of an α-Amino Ester to Methyl (E)-3-[(3R,7aS)-2-Phenylperhydropyrrolo[1,2-c]imidazol-3-yl]propenoate

Hidetoshi Yamamoto, S. Kanemasa, E. Wada, 1991 .

INTRAMOLECULAR OXIDATIVE COUPLING OF BROMINATED 2,4′-DIHYDROXYDIARYLMETHANES. A BIOGENETIC SYNTHESIS OF THELEPIN AND ITS ANALOGS

S. Kanemasa, O. Tsuge, Haruyuki Watanabe, 1984 .

exo-Selective peripheral cycloaddition reactions of pyrido(2,1-a)isoindole.

S. Mori, S. Kanemasa, S. Kajigaeshi, 1985 .

Regiocontrol of nitrile oxide cycloadditions to allyl alcohols. Synthesis of 4-substituted and 4,4-disubstituted 5-hydroxymethyl-2-isoxazolines

S. Kanemasa, E. Wada, M. Nishiuchi, 1992 .

AZAFULVENES. 3. CYCLOADDITION REACTION OF 6-AMINO-1-AZAFULVENE TO ELECTRON-DEFICIENT OLEFIN AND ACETYLENE

S. Kanemasa, S. Kajigaeshi, Masanori Watanabe, 1976 .

AZAFULVENES 1. A NOVEL GENERATIVE METHOD OF 6-AMINO-1-AZAFULVENE AND ITS CYCLOADDITION REACTION WITH ISOCYANATE AND ISOTHIOCYANATE

Takashi Kobayashi, S. Kanemasa, S. Kajigaeshi, 1975 .

Synthesis of 2-(1-Phosphorylalkyl)- and 2-(1-Alkenyl)furans through Nitrile Oxide Cycloaddition Route

H. Suga, S. Kanemasa, O. Tsuge, 1988 .

Synthesis of 4-[(E)-1-Alkenyl]-2-hydroxybutanolides and (Z)-4-Alkylidene-2-butenolides through Cycloadditions Using a Phosphorus-Functionalized Nitrile Oxide

H. Suga, S. Kanemasa, O. Tsuge, 1989 .

PERIPHERAL CONJUGATE SYSTEMS 1. CYCLOADDITION OF INDOLIZINE TO ELECTRON-DEFICIENT OLEFIN

S. Kanemasa, S. Kajigaeshi, S. Ikeda, 1976 .

PERIPHERAL CONJUGATE SYSTEMS 1. CYCLOADDITION OF INDOLIZINE TO ELECTRON-DEFICIENT OLEFINS

S. Kanemasa, S. Kajigaeshi, S. Ikeda, 1976 .

Azafulvenes 8. Cycloaddition Reaction of 8-Azaheptafulvene to Sulfene

S. Kanemasa, S. Kajigaeshi, T. Iwasaki, 1978 .

Synthesis and Acid-Catalyzed Ring Opening of 1-Alkenyl Cyclopropyl Ketones

S. Kanemasa, O. Tsuge, Toshiro Suzuki, 1988 .

A highly effective quenching method of 1,3-dipolar cycloadditions of nitrile oxides or nitrile oxide/Lewis acid complexes by use of 2-propenyloxymagnesium bromide

S. Kanemasa, M. Nishiuchi, 1993 .

A Highly Effective Quenching Method of 1,3-Dipolar Cycloadditions of Nitrile Oxides or Nitrile Oxide/Lewis Acid Complexes by the Use of 2- Propenyloxymagnesium Bromide.

S. Kanemasa, M. Nishiuchi, 1993 .

Studies of Acyl and Thioacyl Isocyanates. XIV. The Reactions of Benzoyl and Thiobenzoyl Isocyanates with Hydrazones

S. Kanemasa, O. Tsuge, 1974 .

Acyl and thioacyl isocyanates. XIII. Reactions of benzoyl and thiobenzoyl isocyanates with hydrazobenzenes and further investigation of the reaction of thiobenzoyl isocyanate with phenylhydrazine

S. Kanemasa, O. Tsuge, 1973 .

Stereoselective Cycloadditions of Pyridinium or Isoquinolinium Methylides with Olefinic Dipolarophiles and Subsequent Cycloadditions of the Cycloadducts with Nitrile Oxides

S. Takenaka, S. Kanemasa, O. Tsuge, 1986 .

Studies of thiobenzoyl isocyanate—I

M. Tashiro, S. Kanemasa, O. Tsuge, 1968 .

Synthesis and Acid‐Catalyzed Ring Opening of 1‐Alkenyl Cyclopropyl Ketones.

S. Kanemasa, O. Tsuge, Toshiro Suzuki, 1988 .

Synthesis of Vinylcyclopropanes, Cyclopropyl Vinyl Ketones, and 3-Pyrazolyl Vinyl Ketones from 1-Diazo-3-trimethylsilylpropanone

S. Kanemasa, O. Tsuge, Koyo. Matsuda, 1986 .

Azafulvenes;51. A Facile Synthesis of 8-Azaheptafulvenes

S. Kanemasa, K. Sanechika, S. Kajigaeshi, 1977 .

Intramolecular Cycloaddition of the Azomethine Ylides Derived from α-Amino Acids or Esters and 5-Oxo-6-heptenals or 4-Oxo-5-hexenals

S. Kanemasa, K. Doi, E. Wada, 1990 .

Highly Endo‐ and Enantioselective Asymmetric Nitrone Cycloadditions Catalyzed by the Aqua Complex of 4,6‐Dibenzofurandiyl‐2,2′‐bis(4‐phenyloxazoline)—Nickel(II) Perchlorate. Transition Structure Based on Dramatic Effect of MS 4A on Selectivities.

J. Tanaka, S. Kanemasa, Yoji Oderaotoshi, 1999 .

Lewis acid-catalyzed nitrone cycloadditions to bidentate and tridentate α,β-unsaturated ketones. High rate acceleration, absolutely endo-selective and regioselective reactions

T. Uemura, S. Kanemasa, E. Wada, 1992 .

Azafulvenes. 2. Formation of Iminium Salt from Pyrrole- and Indolecarbaldehyde and Its Reaction with Bases

Takashi Kobayashi, S. Kanemasa, S. Kajigaeshi, 1975 .

Synthesis and Consecutive Double Diels–Alder Cycloadditions of 3-Methylene-5-phenylsulfinyl-1-pentene as a Synthetic Equivalent of Parent Cross-conjugated Triene, 3-Methylene-1,4-pentadiene

S. Kanemasa, O. Tsuge, N. Nagasaki, 1986 .

The thermolysis of thianaphthenequinone

M. Tashiro, S. Kanemasa, O. Tsuge, 1972 .

New synthesis of 2-oxo-3-alkenylphosphonates and hetero diels−Alder reactions with vinyl ethers leading to 5-substituted 2-phosphinyl-2-cyclohexen-1-ones

S. Kanemasa, O. Tsuge, E. Wada, 1989 .

Diene-transmissive Diels-Alder Reactions and Their Related Reactions

S. Kanemasa, O. Tsuge, E. Wada, 1986 .

Improved catalysis of nitrone 1,3-dipolar cycloadditions by solving the aggregation issue of the DBFOX/Ph-transition metal complexes

M. Hasegawa, S. Kanemasa, M. Shirahase, 2004 .

Improved Catalysis of Nitrone 1,3‐Dipolar Cycloadditions by Solving the Aggregation Issue of the DBFOX/Ph‐Transition Metal Complexes.

M. Hasegawa, S. Kanemasa, M. Shirahase, 2004 .

Stable Configuration of Ester-Stabilized Azomethine Ylides. Stabilization of anti-Form by 1,5-Dipolar Interaction and of syn-Form by Hydrogen Bonding

S. Takenaka, K. Ueno, S. Kanemasa, 1986 .

AMINO ACID APPROACH AS A GENERAL ROUTE TO NONSTABILIZED AZOMETHINE YLIDES. FACILE GENERATION OF PARENT METHANIMINIUM METHYLIDE AND ITS 1-MONO- AND 1,1-DISUBSTITUTED DERIVATIVES

S. Takenaka, S. Kanemasa, O. Tsuge, 1986 .

Amino Acid Approach as a General Route to Nonstabilized Azomethine Ylides.

S. Takenaka, S. Kanemasa, O. Tsuge, 1986 .

Stable Configuration of Ester-Stabilized Azomethine Ylides. Stabilization of anti-Form by 1,5-Dipolar Interaction and of syn-Form by Hydrogen Bonding.

S. Takenaka, K. Ueno, S. Kanemasa, 1987 .

Synthesis of 3-(2-Pyridyl)-2-pyrazoline Derivatives as Candidates for Heterocyclic Chiral Ligands of the Chirality Relay Types

S. Kanemasa, H. Yanagita, 2007 .

Generation of Sulfur-Functionalized Nitrile Oxide, (Phenylthio)acetonitrile Oxide, and Synthetic Applications

H. Suga, S. Kanemasa, O. Tsuge, 1988 .

Generation of Sulfur‐Functionalized Nitrile Oxide, (Phenylthio)acetonitrile Oxide, and Synthetic Applications.

H. Suga, S. Kanemasa, O. Tsuge, 1989 .

Unusual Diastereofacial Selectivity in the Michael Addition Reactions of Lithiated 2-Aminoacetates and -acetamides to α,β-Unsaturated Carbonyl Compounds

S. Kanemasa, Y. Taguchi, M. Nomura, 1992 .

Diastereoselective Water Quenching of the 1:2 Michael Adducts of Grignard Reagents with Methyl 2-(Trimethylsilyl)acrylate

J. Tanaka, S. Kanemasa, O. Tsuge, 1989 .

Absolutely Diastereoselective Asymmetric Michael Addition of the Camphor Imine of t-Butyl Aminoacetate with 2-Alkylidenemalonates

S. Kanemasa, O. Tsuge, A. Tatsukawa, 1989 .

Synthesis of pure enantiomers of a new diol ligand, trans-4,5-Bis(2-hydroxyphenyl)-2,2-dimethyl-1,3-dioxolane

Hidetoshi Yamamoto, S. Kanemasa, Shigeru Kobayashi, 1996 .

Synthesis of Pure Enantiomers of a New Diol Ligand, trans-4,5-Bis(2- hydroxyphenyl)-2,2-dimethyl-1,3-dioxolane.

Hidetoshi Yamamoto, S. Kanemasa, Shigeru Kobayashi, 1996 .

N-(TRIMETHYLSILYLMETHYL)CARBODIIMIDES AND -KETENIMINE AS PRECURSORS OF IMINO- AND ALKYLIDENE-2-AZAALLYL ANIONS

S. Kanemasa, O. Tsuge, Koyo. Matsuda, 1984 .

N-((TRIMETHYLSILYL)METHYL)CARBODIIMIDES AND -KETENIMINE AS PRECURSORS OF IMINO- AND ALKYLIDENE-2-AZAALLYL ANIONS

S. Kanemasa, O. Tsuge, Koyo. Matsuda, 1985 .

A novel tandem transetherification—intramolecular hetero Diels–Alder reactions for construction of fused heterocycles

G. Kumaran, S. Kanemasa, E. Wada, 2000 .

Studies of acyl and thioacyl isocyanates—XI : The reactions of benzoyl and thiobenzoyl isocyanates with 2-thiazolines and 2-oxazolines☆

S. Kanemasa, O. Tsuge, 1972 .

Michael additions of the lithium enolates of α-heterosubstituted esters and amides to a chiral α,β-unsaturated carbonyl acceptor, ethyl (E-3-[(S)-2,2-Dimethyl-1,3-dioxolan-4-yl]propenoate. High stereoselection and chiral induction

S. Kanemasa, M. Nomura, 1994 .