Regioselectivity with hemispherical chelators:: Increasing the catalytic efficiency of complexes of diphosphanes with large bite angles

被引：73

作者：

Semeril, David

Jeunesse, Catherine

Matt, Dominique

Toupet, Loic

机构：

[1] Univ Strasbourg, CNRS, Lab Chim Inorgan Mol, F-67008 Strasbourg, France

[2] Univ Rennes 1, CNRS, UMR 6626, Grp Mat Condensee & Mat, F-35042 Rennes, France

来源：

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION | 2006年 / 45卷 / 35期

关键词：

allylic alkylation; calixarenes; diphosphites; hydroformylation; regioselectivity;

D O I：

10.1002/anie.200601978

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

(Chemical Equation Presented) Control through molecular pockets: Calixarene-derived diphosphites provide effective hemispherical crowding about catalytic centers. When used in the palladium-catalyzed alkylation of cinnamyl acetate, regioselectivities higher than 98% in favor of the linear product are observed. In the rhodium-catalyzed hydroformylation of styrene, these diphosphites lead to phenylpropionaldehyde with selectivities as high as 76%. © 2006 Wiley-VCH Verlag GmbH & Co. KGaA.

引用

页码：5810 / 5814

页数：5

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