Direct Allylation of In Situ Generated Aldehyde Acyl Anions by Synergistic NHC and Palladium Catalysis
作者:Milind M. Ahire、Santosh B. Mhaske
DOI:10.1002/anie.201400623
日期:2014.7.1
The direct regioselective allylation of in situ generated aldehyde acyl anions has been achieved by synergistic NHC and Pd catalysis. It provides an efficient access to valuable β,γ‐unsaturated ketones under mild reaction conditions starting from easily accessible allylic carbonates and aldehydes without any preactivation. The synergistic catalysis method demonstrated herein adds a new dimension to
原位产生的醛酰基阴离子的直接区域选择性烯丙基化已通过协同NHC和Pd催化实现。它可以在温和的反应条件下有效地获取有价值的β,γ-不饱和酮,从容易获得的烯丙基碳酸盐和醛类开始,无需任何预活化。本文展示的协同催化方法为金属介导的C烯丙基化区域增加了新的维度。