Ohgo, Yoshiaki : rechercher sur Z-Library

Année:

1996

Langue:

english

Fichier:

PDF, 225 KB

english, 1996

ChemInform Abstract: Enantioselective Protonation of Samarium Enolates Derived from α-Heterosubstituted Ketones and Lactone by SmI2-Mediated Reduction.

Yutaka Nakamura, Seiji Takeuchi, Yoshiaki Ohgo, Makoto Yamaoka, Akihiro Yoshida, Koichi Mikami

Journal:

Yutaka Nakamura, Seiji Takeuchi, Yoshiaki Ohgo, Dennis P. Curran

Année:

1999

Fichier:

PDF, 37 KB

1999

ChemInform Abstract: Asymmetric Alkylation of Aromatic Aldehydes with Diethylzinc Catalyzed by a Fluorous BINOL—Ti Complex in an Organic and Fluorous Biphase System.

Journal:

Yutaka Nakamura, Seiji Takeuchi, Yoshiaki Ohgo, Dennis P. Curran

Année:

2000

Fichier:

PDF, 28 KB

2000

ChemInform Abstract: Preparation of a Fluorous Chiral BINOL Derivative and Application to an Asymmetric Protonation Reaction.

Journal:

Yutaka Nakamura, Seiji Takeuchi, Kazuo Okumura, Yoshiaki Ohgo

Année:

2000

Fichier:

PDF, 28 KB

2000

ChemInform Abstract: Enantioselective Addition of Diethylzinc to Aldehydes Catalyzed by Fluorous β-Aminoalcohols.

Journal:

Année:

2001

Fichier:

PDF, 31 KB

2001

Recyclable Fluorous Chiral Ligands and Catalysts: Asymmetric Addition of Diethylzinc to Aromatic Aldehydes Catalyzed by Fluorous BINOL-Ti Complexes.

Yutaka Nakamura, Seiji Takeuchi, Kazuo Okumura, Yoshiaki Ohgo, Dennis P. Curran

Journal:

Yutaka Nakamura, Seiji Takeuchi, Yoshiaki Ohgo

Année:

2002

Fichier:

PDF, 30 KB

2002

Enantioselective Carbon—Carbon Bond Forming Reactions Using Fluorous Chiral Catalysts.

Journal:

Yutaka Nakamura, Seiji Takeuchi, Yoshiaki Ohgo

Année:

2003

Langue:

english

Fichier:

PDF, 172 KB

english, 2003

Enantioselective protonation of samarium enolates by a C2-symmetric chiral diol

Seiji Takeuchi, Akiko Ohira, Norikazu Miyoshi, Hajime Mashio, Yoshiaki Ohgo

Journal:

Tetrahedron: Asymmetry

Année:

1994

Langue:

english

Fichier:

PDF, 1.27 MB

english, 1994

Enantioselective carbon–carbon bond forming reactions using fluorous chiral catalysts

Journal:

Journal of Fluorine Chemistry

Année:

2003

Langue:

english

Fichier:

PDF, 190 KB

english, 2003

Enantioselective addition of diethylzinc to aldehydes catalyzed by fluorous β-aminoalcohols

Yutaka Nakamura, Seiji Takeuchi, Kazuo Okumura, Yoshiaki Ohgo

Journal:

Année:

2001

Langue:

english

Fichier:

PDF, 130 KB

english, 2001

Recyclable fluorous chiral ligands and catalysts: asymmetric addition of diethylzinc to aromatic aldehydes catalyzed by fluorous BINOL–Ti complexes

Yutaka Nakamura, Seiji Takeuchi, Kazuo Okumura, Yoshiaki Ohgo, Dennis P Curran

Journal:

Année:

2002

Langue:

english

Fichier:

PDF, 142 KB

english, 2002

Enantioselective protonation of samarium enolates derived from α-heterosubstituted ketones and lactone by SmI2-mediated reduction

Yutaka Nakamura, Seiji Takeuchi, Yoshiaki Ohgo, Makoto Yamaoka, Akihiro Yoshida, Koichi Mikami

Journal:

Année:

1999

Langue:

english

Fichier:

PDF, 1.46 MB

english, 1999

Preparation of a fluorous chiral BINAP and application to an asymmetric Heck reaction

Yutaka Nakamura, Seiji Takeuchi, Songlin Zhang, Kazuo Okumura, Yoshiaki Ohgo

Journal:

Année:

2002

Langue:

english

Fichier:

PDF, 112 KB

english, 2002

Enantiomeric resolution of fluorous mixture by chiral CD columns: asymmetric reduction of a mixture of fluorous ketones

Yutaka Nakamura, Seiji Takeuchi, Kazuo Okumura, Yoshiaki Ohgo, Hiroshi Matsuzawa, Koichi Mikami

Journal:

Année:

2003

Langue:

english

Fichier:

PDF, 149 KB

english, 2003

SmI2-mediated reductive enolization of α-hetero-substituted ketones and enantioselective protonation

Yutaka Nakamura, Seiji Takeuchi, Yoshiaki Ohgo, Makoto Yamaoka, Akihiro Yoshida, Koichi Mikami

Journal:

Seiji Takeuchi, Yutaka Nakamura, Yoshiaki Ohgo, Dennis P. Curran

Année:

1997

Langue:

english

Fichier:

PDF, 171 KB

english, 1997

Catalytic enantioselective protonation of a samarium enolate with fluorous chiral and achiral proton sources in fluorous biphasic systems

Journal:

Yutaka Nakamura, Seiji Takeuchi, Yoshiaki Ohgo, Dennis P. Curran *

Année:

1998

Langue:

english

Fichier:

PDF, 227 KB

english, 1998

Asymmetric alkylation of aromatic aldehydes with diethylzinc catalyzed by a fluorous BINOL–Ti complex in an organic and fluorous biphase system

Journal:

Journal of Organometallic Chemistry

Année:

2000

Langue:

english

Fichier:

PDF, 144 KB

english, 2000

Solid state-specific and chiral lattice-controlled asymmetric photoisomerization of 3-substituted propyl cobalt complexes, and direct observation of the intermediate complex

Yoshiaki Ohgo, Kanako Ishida, Yoshito Hiraga, Yoshifusa Arai, Seiji Takeuchi

Journal:

Année:

2006

Langue:

english

Fichier:

PDF, 647 KB

english, 2006

Preparation of a Fluorous Chiral BINOL Derivative and Application to an Asymmetric Protonation Reaction

Yutaka Nakamura, Seiji Takeuchi, Yoshiaki Ohgo, Dennis P. Curran

Journal:

Yoshiaki Ohgo, Michio Kimura, Seiji Takeuchi

Année:

2000

Langue:

english

Fichier:

PDF, 158 KB

english, 2000

Asymmetric reaction. XV. Structure and relative configuration of a reductive dimerization product of ethyl phenylglyoxylate, diethyl diphenyltartrate

Journal:

Journal of Heterocyclic Chemistry

Année:

1988

Fichier:

PDF, 233 KB

1988

Coronal Mass Ejections Observed at the Total Solar Eclipse on 13 November 2012

Hanaoka, Yoichiro, Nakazawa, Jun, Ohgoe, Osamu, Sakai, Yoshiaki, Shiota, Kazuo

Journal:

Solar Physics

Année:

2014

Langue:

english

Fichier:

PDF, 872 KB

english, 2014

Editorial Board

Ohgo, Yoshiaki, Shimizu, Hiroo, Saigoh, Yoshitaka, Ikeda, Kohsuke, Komori-Orisaku, Keiko, Arai, Yoshifusa, Hamada, Keisuke

Journal:

Meat Science

Année:

1985

Langue:

english

Fichier:

PDF, 107 KB

english, 1985

Solid state and crystalline state-specific (ω→α) photoisomerization-linked dioxygenation reaction of (ω-substituted alkyl)cobalt complexes

Ohgo, Yoshiaki, Shimizu, Hiroo, Saigoh, Yoshitaka, Ikeda, Kohsuke, Komori-Orisaku, Keiko, Arai, Yoshifusa, Hamada, Keisuke

Journal:

Yoshimura, Juj., Ohgo, Yoshiaki., Sato, Tetsuo.

Année:

2012

Langue:

english

Fichier:

PDF, 666 KB

english, 2012

Steric Difference between the Substitution Reaction Products of Lithium Alkyls and Grignard Reagents with α-Aminonitriles. 1 An Asymmetric Reproduction

Journal:

Kurihara, Toshiharu, Uchida, Akira, Ohashi, Yuji, Sasada, Yoshio, Ohgo, Yoshiaki

Année:

1964

Langue:

english

Fichier:

PDF, 580 KB

english, 1964

Crystalline-state reaction of cobaloxime complexes by x-ray exposure. 7. Structure analysis of multistage racemization

Journal:

Ohashi, Yuji, Yanagi, Kazunori, Kurihara, Toshiharu, Sasada, Yoshio, Ohgo, Yoshiaki

Année:

1984

Langue:

english

Fichier:

PDF, 1.63 MB

english, 1984

Crystalline state reaction of cobaloxime complexes by x-ray exposure. 1. Direct observation of cobalt-carbon bond cleavage in [(R)-1-cyanoethyl][(S)-(-)-.alpha.-methylbenzylamine]bis(dimethylglyoximato)cobalt(III)

Journal:

Ohashi, Yuji, Yanagi, Kazunori, Kurihara, Toshiharu, Sasada, Yoshio, Ohgo, Yoshiaki

Année:

1981

Langue:

english

Fichier:

PDF, 1.19 MB

english, 1981

Crystalline-state reaction of cobaloxime complexes by x-ray exposure. 2. An order-to-order racemization in the crystal of [(S)-1-cyanoethyl](pyridine)bis(dimethylglyoximato) cobalt(III)

Journal:

Ohgo, Yoshiaki, Takeuchi, Seiji

Année:

1982

Langue:

english

Fichier:

PDF, 851 KB

english, 1982

Solid state unidirectional photoisomerization of (?-substituted ethyl)bis(dibubstituted glyoximato)(L)cobalt(III) to the ?-substituted ethyl complexes (L = pyridine or primary amine)

Journal:

Journal of the Chemical Society Chemical Communications

Année:

1985

Langue:

english

Fichier:

PDF, 225 KB

english, 1985

Chiral Lattice-Controlled Asymmetric (β-α)PHOTOISOMERIZATION OF 2-SUBSTITUTED ETHYL COBALOXIME COMPLEXES

Ohgo, Yoshiaki, Hagiwara, Mieko, Shida, Mitsuru, Arai, Yoshifusa, Takeuchi, Seiji

Journal:

Molecular Crystals and Liquid Crystals Science and Technology Section A Molecular Crystals and Liquid Crystals

Année:

1996

Langue:

english

Fichier:

PDF, 269 KB

english, 1996

Mechanism of Solid-State Racemization for Optically Active Alkyl Cobaloxime Complexes — Synthesis and Solid-State Reaction of Deuterium-Labeled Complexes

Arai, Yoshifusa, Ohgo, Yoshiaki, Takeuchi, Seiji

Journal:

Molecular Crystals and Liquid Crystals Science and Technology Section A Molecular Crystals and Liquid Crystals

Année:

1996

Langue:

english

Fichier:

PDF, 282 KB

english, 1996

The Role of Hydrogen Bond and Crystal Solvent in the Solid-state (β-α) Photoisomerization of Novel 2-( N -phenylcarbamoyl)ethyl Cobaloxime Complexes [1]

Ohgo, Yoshiki, Ohash, Yuji, Hagiwara, Mieko, Shida, Mitsuru, Arai, Yoshifusa, Takeuchi, Seiji, Ohgo, Yoshiaki

Journal:

Supramolecular Chemistry

Année:

2001

Langue:

english

Fichier:

PDF, 699 KB

english, 2001

Crystalline-State Reaction of Cobaloxime Complexes by X-ray Exposure. XII. A New Type of Racemization with a Negligibly Small Change of the Cell Dimensions [1]

Tomotake, Yasuko, Uchida, Akira, Ohashi, Yuji, Sasada, Yoshio, Ohgo, Yoshiaki, Baba, ShōE

Journal:

Israel Journal of Chemistry

Année:

1985

Langue:

english

Fichier:

PDF, 1.28 MB

english, 1985

Multi-Stage Crystalline State Racemization of a Bulky Chiral Group

Sam, Yoshii, Ohashi, Yuji, Arai, Yoshifusa, Ohgo, Yoshiaki

Journal:

Molecular Crystals and Liquid Crystals Science and Technology Section A Molecular Crystals and Liquid Crystals

Année:

1992

Langue:

english

Fichier:

PDF, 369 KB

english, 1992

Temperature Dependence of Reaction Rate in Crystalline State Racemization

Takenaka, Yasuyuki, Kojima, Yuko, Ohashi, Yuji, Ohgo, Yoshiaki

Journal:

Molecular Crystals and Liquid Crystals Science and Technology Section A Molecular Crystals and Liquid Crystals

Année:

1992

Langue:

english

Fichier:

PDF, 344 KB

english, 1992

Effect of the N -Substituent on the Course of the Reaction of α-Aminonitriles with Organometallic Reagents

Yoshimura, Juji, Ohgo, Yoshiaki, Sato, Tetsuo

Journal:

Ohgo, Yoshiaki, Yoshimura, Juji, Sato, Tetsuo

Année:

1965

Langue:

english

Fichier:

PDF, 10.10 MB

english, 1965

Asymmetric Reactions. II. Anomalous Stereoselectivity of the Grignard Reaction with N -Benzyl-2,3- O -isopropylidene-D-glyceraldimine

Journal:

Ohgo, Yoshiaki, Takeuchi, Seiji, Yoshimura, Juji

Année:

1969

Langue:

english

Fichier:

PDF, 8.72 MB

english, 1969

Asymmetric Reactions. IV. An Attempted Asymmetric Reduction by a Solution of [Co(CN) 5 ] 3− and Optically Active α-Amino Acid, and Its Reactive Species

Journal:

Ohgo, Yoshiaki, Takeuchi, Seiji, Yoshimura, Juji

Année:

1970

Fichier:

PDF, 463 KB

1970

Asymmetric Reactions. V. Homogeneous Hydrogenation of Unsaturated Compounds Catalyzed by Bis(dimethylglyoximato)cobalt(II)

Journal:

Ohgo, Yoshiaki, Takeuchi, Seiji, Natori, Yukikazu, Yoshimura, Juji

Année:

1971

Fichier:

PDF, 243 KB

1971

Asymmetric Reactions. X. Asymmetric Hydrogenation Catalyzed by Bis(dimethylglyoximato)cobalt(II)–Chiral Cocatalyst (Amino Alcohol) System

Journal:

Takeuchi, Seiji, Ohgo, Yoshiaki

Année:

1981

Fichier:

PDF, 1.87 MB

1981

Asymmetric Hydrogenation Catalyzed by the (Achiral Base)bis(dimethylglyoximato)cobalt(II)–Chiral Cocatalyst System. The Preparation of a New Type of Chiral Cocatalyst and Its Application to the Asymmetric Hydrogenation of Methyl N -(Acetylamino)acrylate and Benzil

Journal:

Année:

1981

Fichier:

PDF, 1.04 MB

1981

Preparations and Properties of Optically Active (Alkyl)bis(dimethylglyoximato)cobalt(III) Complexes

Ohgo, Yoshiaki, Takeuchi, Seiji, Natori, Yukikazu, Yoshimura, Juji, Ohashi, Yuji, Sasada, Yoshio

Journal:

Ohashi, Yuji, Sasada, Yoshio, Takeuchi, Seiji, Ohgo, Yoshiaki

Année:

1981

Fichier:

PDF, 813 KB

1981

Structural Studies of Asymmetric Hydrogenation. IV. The Crystal Structures of [( R )-1-Cyanoethyl][( S )(−)-α-methylbenzylamine]bis(dimethylglyoximato)cobalt(III) at 293 K and 173 K

Journal:

Takeuchi, Seiji, Ohgo, Yoshiaki

Année:

1980

Fichier:

PDF, 1.11 MB

1980

Asymmetric Hydrogenation of N , N ′-Dimethyl-5-alkylidene- and arylmethylenehydantoins Catalyzed by (Achiral Base)bis(dimethylglyoximato)cobalt(II)-Chiral Cocatalyst System

Journal:

Takeuchi, Seiji, Ohgo, Yoshiaki

Année:

1987

Fichier:

PDF, 1.02 MB

1987

SmI 2 -(Chiral Auxiliary)-Induced Asymmetric Reduction

Journal:

Chemistry Letters

Année:

1988

Langue:

english

Fichier:

PDF, 3.22 MB

english, 1988

Synthesis of D-Threosamine and D-Erythrosamine

Yoshimura, Juji, Ohgo, Yoshiaki, Sato, Tetsuo

Journal:

Ohgo, Yoshiaki, Takeuchi, Seiji, Yoshimura, Juji

Année:

1961

Langue:

english

Fichier:

PDF, 3.42 MB

english, 1961

Asymmetric Hydrogenation Catalyzed by Bis(dimethylglyoximato)cobalt(II)-Optically Active Amine Complex

Journal:

Yoshimura, Juji, Ohgo, Yoshiaki, Ajisaka, Katsumi, Konda, Yaeko

Année:

1971

Fichier:

PDF, 187 KB

1971

Asymmetric Reactions. VII. Stereoselectivities in Phenyllithium and Grignard Reactions with Tetrahydrofurfural Derivatives

Journal:

Ohgo, Yoshiaki, Konda, Yaeko, Yoshimura, Juji

Année:

1972

Fichier:

PDF, 1.02 MB

1972

Asymmetric Reactions. VIII. Stereoselectivities in Several Organometallic Reactions with N -Benzyl-2,3- O -isopropylidene-D-glyceraldimine

Journal:

Ohgo, Yoshiaki, Kobayashi, Kazuhiko, Takeuchi, Seiji, Yoshimura, Juji

Année:

1973

Fichier:

PDF, 256 KB

1973

Asymmetric Reactions. VI. Asymmetric Hydrogenation of Atropate Catalyzed by Cyanocobalt-Opticall Active Diamine Complex

Journal:

Année:

1972

Fichier:

PDF, 429 KB

1972

Model Complexes of Catalyzers for Asymmetric Hydrogenation. I. Crystal Structure of β-Cyanoethyl(D(−)- erythro -1,2-diphenyl-2-hydroxyethylamine)bis(dimethylglyoximato)cobalt

Ohashi, Yuji, Sasada, Yoshio, Tashiro, Yasuhisa, Ohgo, Yoshiaki, Takeuchi, Seiji, Yoshimura, Juji

Journal: