STRONG ELECTRONIC EFFECTS ON ENANTIOSELECTIVITY IN RHODIUM-CATALYZED HYDROBORATIONS WITH NOVEL PYRAZOLE-CONTAINING FERROCENYL LIGANDS

被引：162

作者：

SCHNYDER, A ^{[1
]}

HINTERMANN, L ^{[1
]}

TOGNI, A ^{[1
]}

机构：

[1] ETH ZENTRUM,ANORGAN CHEM LAB,CH-8092 ZURICH,SWITZERLAND

来源：

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION IN ENGLISH | 1995年 / 34卷 / 08期

关键词：

ASYMMETRIC SYNTHESES; COMPLEXES WITH P; N LIGANDS; FERROCENYL LIGANDS; HYDROBORATIONS;

D O I：

10.1002/anie.199509311

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The highest enantioselectivity yet for a hydroboration (98% ee) was achieved with the ferrocenyl ligand 1, R1 = R3 = Me, R2 = H, Ar = 4CF3C6H4, in the Rh‐catalyzed reaction of styrene with catecholborane. The influence of the substituents on both the pyrazolyl and phosphano fragments was studied, and the observations tentatively interpreted in terms of the varying electronic asymmetry they engender at the metal center. (Figure Presented.) Copyright © 1995 by VCH Verlagsgesellschaft mbH, Germany

引用

页码：931 / 933

页数：3

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