New C2-symmetrical ferrocenyl diamines as ligands for ruthenium catalyzed transfer hydrogenation

被引：88

作者：

Schwink, L ^{[1
]}

Ireland, T ^{[1
]}

Püntener, K ^{[1
]}

Knochel, P ^{[1
]}

机构：

[1] Univ Marburg, Fachbereich Chem, D-35032 Marburg, Germany

来源：

TETRAHEDRON-ASYMMETRY | 1998年 / 9卷 / 07期

关键词：

D O I：

10.1016/S0957-4166(98)00093-7

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

The new C-2-symmetrical ferrocenyl diamines 5-7 and 13 proved to be good ligands for the ruthenium catalyzed enantioselective transfer hydrogenation of unsymmetrical ketones. The stereocontrolled and highly flexible synthetic route to the new diamines made it possible to vary the ligand structure in an efficient manner. A short trial and error process led to a very active catalytic system with diamine 6a as the ligand, which is capable of reducing ketones even at -30 degrees C using 2-propanol as a hydrogen source. Enantioselectivities up to 90% were reached in the reduction of 1'-acetonaphthone. (C) 1998 Elsevier Science Ltd. All rights reserved.

引用

页码：1143 / 1163

页数：21

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