NEW COPPER AND RHODIUM CYCLOPROPANATION CATALYSTS SUPPORTED BY CHIRAL BIS(PYRAZOLYL)PYRIDINES - A METAL-DEPENDENT ENANTIOSELECTIVITY SWITCH

被引:61
作者
CHRISTENSON, DL [1 ]
TOKAR, CJ [1 ]
TOLMAN, WB [1 ]
机构
[1] UNIV MINNESOTA,DEPT CHEM,MINNEAPOLIS,MN 55455
关键词
D O I
10.1021/om00005a008
中图分类号
O61 [无机化学];
学科分类号
070301 ; 081704 ;
摘要
Copper and rhodium complexes of new optically pure bis(pyrazolyl)pyridines catalyze the cyclopropanation of styrene with moderate to high enantioselectivities, but the sense of asymmetric induction observed depends on, the nature of the metal ion, implicating interesting mechanistic differences between. the copper- and rhodium-based systems.
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页码:2148 / 2150
页数:3
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