Iron-Catalyzed Highly Regio- and Stereoselective Conjugate Addition of 2,3-Allenoates with Grignard Reagents
作者:Zhan Lu、Guobi Chai、Shengming Ma
DOI:10.1021/ja075750o
日期:2007.11.28
An efficient highly regio- and stereoselective iron-catalyzed conjugate addition of 2,3-allenoates with primary or secondary alkyl, phenyl, or vinyl Grignard reagents to synthesize multi-substituted β,γ-unsaturated enoates has been reported. The in situ formed magnesium dienolate may readily react with different electrophilic reagents to construct an allylic quaternary carbon at the α-position of the
已经报道了一种高效的高度区域选择性和立体选择性铁催化的 2,3-烯丙酸酯与伯或仲烷基、苯基或乙烯基格氏试剂的共轭加成,以合成多取代的 β,γ-不饱和烯酸酯。原位形成的二烯酸镁可以容易地与不同的亲电试剂反应以在酯基的α-位构建烯丙基季碳。