Concepedia

ASYMMETRIC HYDROGENATION CATALYZED BY BIS(DIMETHYLGLYOXIMATO)COBALT(II)- ACHIRAL BASE COMPLEX AND CHIRAL AMINOALCOHOL CONJUGATED SYSTEMS. AN OXIDO-REDUCTASE MODEL WITH ENANTIOSELECTIVITY

Yoshiaki Ohgo, Yukikazu Natori, Seiji Takeuchi, Juji Yoshimura

Chemistry Letters · 1974 · 35 citations · 4 references

DOI

Concepts

Abstract

Abstract A new effective catalyst-system for asymmetric hydrogenation was found, which resembles oxido-reductases in functions. The effects of protonated chiral base in this system made possible to present the mechanism of this catalytic hydrogenation and the enantioselection. The optical yield of benzoin at −10°C reached 78%.

References

4

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

Yoshiaki Ohgo, Seiji Takeuchi, Juji Yoshimura · Bulletin of the Chemical Society of Japan · 1971 · 57 citations

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Model Complexes of Catalyzers for Asymmetric Hydrogenation. I. Crystal Structure of β-Cyanoethyl(<scp>d</scp>(−)-<i>erythro</i>-1,2-diphenyl-2-hydroxyethylamine)bis(dimethylglyoximato)cobalt

Yuji Ohashi, Yoshio Sasada, Yasuhisa Tashiro et al. · Bulletin of the Chemical Society of Japan · 1973 · 21 citations · Full text

, , +13

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

Yoshiaki Ohgo, Seiji Takeuchi, Juji Yoshimura · Bulletin of the Chemical Society of Japan · 1970 · 17 citations

, , +9

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

Yoshiaki Ohgo, Kazuhiko Kobayashi, Seiji Takeuchi et al. · Bulletin of the Chemical Society of Japan · 1972 · 11 citations · Full text

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