Chiral nitrogen-metal complexes for the asymmetric reduction of ketones

被引：53

作者：

terHalle, R ^{[1
]}

Breheret, A ^{[1
]}

Schulz, E ^{[1
]}

Pinel, C ^{[1
]}

Lemaire, M ^{[1
]}

机构：

[1] UCBL,CPE,LAB CATALYSE & SYNTH ORGAN,INST RECH CATALYSE,F-69622 VILLEURBANNE,FRANCE

来源：

TETRAHEDRON-ASYMMETRY | 1997年 / 8卷 / 13期

关键词：

D O I：

10.1016/S0957-4166(97)00227-9

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

Chiral cobalt-diamine complexes have been prepared and tested in catalytic reduction of beta-ketoesters and ketones with molecular hydrogen or hydride transfer reduction (HTR). Modest to high conversions, but low e.e.s were obtained in the first case, whereas encouraging e.e.s (up to 58%) but low conversions were observed ih the reduction of acetophenone by HTR. Synthesis of chiral nitrogen tetradentate ligands for Co, Ir and Rh are described. Furthermore, (1R,2R)-(-)-N-tosyl-1,2-ethanediamine proved to be a particularly efficient ligand for iridium in the hydride transfer reduction of acetophenone (87% conversion, 92% e.e.). (C) 1997 Elsevier Science Ltd.

引用

页码：2101 / 2108

页数：8

共 15 条

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