作者:Barry M. Trost、Lara C. Czabaniuk
DOI:10.1021/ja1079755
日期:2010.11.10
we report palladium-catalyzed asymmetric benzylic alkylation with 3-aryl oxindoles as prochiral nucleophiles. Proceeding analogously to asymmetric allylic alkylation, asymmetric benzylation occurs in high yield and enantioselectivity for a variety of unprotected 3-aryl oxindoles and benzylic methyl carbonates using chiral bisphosphine ligands. This methodology represents a novel asymmetric carbon-carbon
在这里,我们报告了钯催化的不对称苄基烷基化,以 3-芳基羟吲哚作为前手性亲核试剂。与不对称烯丙基烷基化类似地进行,使用手性双膦配体对各种未保护的 3-芳基羟吲哚和苄基甲基碳酸酯以高产率和对映选择性发生不对称苄化。该方法代表在苄基和前手性亲核试剂之间形成新的不对称碳-碳键以生成季中心。