Enantioselective Synthesis of Functionalized Nitrocyclopropanes by Organocatalytic Conjugate Addition of Bromonitroalkanes to α,β-Unsaturated Enones
作者:Jian Lv、Jiaming Zhang、Zhu Lin、Yongmei Wang
DOI:10.1002/chem.200801651
日期:2009.1.12
A general enantioselective synthesis of functionalized nitrocyclopropanes by organocatalytic conjugateaddition of a variety of bromonitroalkanes to α,β‐unsaturated enone systems is presented. The process, efficiently catalyzed by the salts of 9‐amino‐9‐deoxyepiquinine 1 d serves as a powerful approach to the preparation of synthetically and biologically important cyclopropanes with high levels of