Zirconium-catalyzed asymmetric carboalumination (ZACA reaction) of 1,4-dienes

被引:18
|
作者
Tan, Z [1 ]
Liang, B [1 ]
Huo, SQ [1 ]
Shi, JC [1 ]
Negishi, E [1 ]
机构
[1] Purdue Univ, Herbert C Brown Lab Chem, W Lafayette, IN 47907 USA
基金
美国国家科学基金会;
关键词
D O I
10.1016/j.tetasy.2006.01.017
中图分类号
O61 [无机化学];
学科分类号
070301 ; 081704 ;
摘要
Variously substituted 1,4-dienes containing a terminal vinyl (H2C=CH) group, readily undergo the ZACA reaction with Me3Al and higher alkylalanes in a 1: 1 molar ratio in the presence of a catalytic amount (1-5 mol %) of bis[(1-neomenthyl)indenyl]zirconium dichloride in good yields and in good enantioselectivity (70-92% ee), thereby providing an efficient and convenient route to various alkene-containing chiral natural products. Only the reaction of the parent 1,4-pentadiene is accompanied by extensive racemization. (c) 2006 Elsevier Ltd. All rights reserved.
引用
收藏
页码:512 / 515
页数:4
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