Asymmetric Synthesis of Aziridine 2-Phosphonates from Enantiopure Sulfinimines (<i>N</i>-Sulfinyl Imines). Synthesis of α-Amino Phosphonates
作者:Franklin A. Davis、Yongzhong Wu、Hongxing Yan、William McCoull、Kavirayani R. Prasad
DOI:10.1021/jo020707z
日期:2003.3.1
chloromethylphosphonate anions to enantiopure sulfinimines, has been developed for the asymmetric synthesis of aziridine 2-phosphonates. Best results involve cyclization of the syn and anti diastereomerically pure alpha-chloro-beta-amino phosphonates to cis- and trans-N-sulfinyl aziridine 2-phosphonates, respectively, with n-BuLi. A transition-state hypothesis is proposed wherein the chloromethylphosphonate