BETA-SELECTIVE EPOXIDATION OF CHOLESTEROL DERIVATIVES WITH MOLECULAR-OXYGEN AND ALDEHYDE CATALYZED BY MANGANESE(II) COMPLEX

被引:63
作者
YAMADA, T
IMAGAWA, K
MUKAIYAMA, T
机构
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D O I
10.1246/cl.1992.2109
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
In the presence of a catalytic amount of bis(dipivaloylmethanato)manganese(II) (= Mn(dpm)2), various cholesterol derivatives are smoothly converted into the corresponding beta-epoxides in good to high yields with combined use of molecular oxygen and isobutyraldehyde. These stereoselectivities are the reversal of the cases using peracid such as mCPBA.
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页码:2109 / 2112
页数:4
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