Rhodium(I)-, iridium(I)-, and ruthenium(II)-catalyzed asymmetric transfer hydrogenation of ketones using diferrocenyl dichalcogenides as chiral ligands

被引：54

作者：

Nishibayashi, Y

Singh, JD

Arikawa, Y

Uemura, S

Hidai, M

机构：

[1] KYOTO UNIV,GRAD SCH ENGN,DEPT ENERGY & HYDROCARBON CHEM,SAKYO KU,KYOTO 60601,JAPAN

[2] UNIV TOKYO,DEPT CHEM & BIOTECHNOL,BUNKYO KU,TOKYO 113,JAPAN

来源：

JOURNAL OF ORGANOMETALLIC CHEMISTRY | 1997年 / 531卷 / 1-2期

基金：

日本学术振兴会;

关键词：

rhodium; iridium; ruthenium; hydrogenation; chalogenide; chirality;

D O I：

10.1016/S0022-328X(96)06681-8

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

[R,S;R,S]-Bis[2-[1-(dimethylamino)ethyl]ferrocenyl] dichalcogenides, (R,S)-{[EC5H3CHMe(NMe2)]Fe(C5H5)}(2) (E = S, Se, Te), act as chiral ligands for Rh(I)-catalyzed asymmetric transfer hydrogenation of alkyl aryl ketones using a diphenylsilane/methanol system to give the corresponding alcohols in fair to good yields with moderate enantiomeric excess (22-95% ee). The transfer of hydrogen from methanol to the resultant alcohol is confirmed by experiment using deuterated methanol (MeOD), and a new catalytic system containing Rh-hydride species is proposed. In the well-known 2-propanol/base system, the stereoselection is not satisfactory for Rh(I)-, Lr(I)- and Ru(II)-catalyzed reactions using these ligands.

引用

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页码：13 / 18

页数：6

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