Enantioselective Organocatalytic Synthesis of α-Cyclopropylphosphonates through a Domino Michael Addition/Intramolecular Alkylation Reaction
作者:Ana Maria Faísca Phillips、Maria Teresa Barros
DOI:10.1002/ejoc.201301207
日期:2014.1
An organocatalytic domino reaction consisting of Michael addition/intramolecular alkylation between α,β-unsaturated aldehydes and bromophosphonoacetates was developed. Highly functionalised cyclopropylphosphonates containing three chiral centres, one of them quaternary, were obtained with good diastereoselectivities of up to 83:17 and very high enantioselectivities of up to 99 %.
开发了由 α,β-不饱和醛和溴膦酰基乙酸酯之间的迈克尔加成/分子内烷基化组成的有机催化多米诺反应。获得了包含三个手性中心(其中一个是季铵盐)的高度官能化环丙基膦酸酯,其非对映选择性高达 83:17,对映选择性高达 99%。