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期刊论文

Enantioselective conjugate addition of diethylzinc to cyclic enones with chiral aryl diphosphite-copper catalysts

鄢明Ming Yan and Albert S. C. Chan *

Tetrahedron Letters 40(1999)6645-6648,-0001,():

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摘要/描述

A series of C2-symmetric aryl diphosphites based on chiral binaphthol were prepared and their copper complexes were found to be efficient catalysts for the conjugate addition of diethylzinc to cyclic enones. Good enantioselectivities (up to 89.8 and 88.7% ee, respectively) were obtained in the conjugate addition of diethylzinc to 2-cyclohexenonc and 2-cyclopcntenone.

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版权说明:以下全部内容由鄢明上传于   2009年04月20日 10时48分06秒,版权归本人所有。

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