作者:Amandine Pons、Pavel Ivashkin、Thomas Poisson、André B. Charette、Xavier Pannecoucke、Philippe Jubault
DOI:10.1002/chem.201600649
日期:2016.4.25
A catalytic asymmetric synthesis of halocyclopropanes is described. The developed method is based on a carbenoid cyclopropanation of 2‐haloalkenes with tert‐butyl α‐cyano‐α‐diazoacetate using a chiral rhodium catalyst that permits access to a broad range of highly functionalized chiral halocyclopropanes (F, Cl, Br, and I) in good yields, moderate diastereoselectivity, and excellent enantiomeric ratios
描述了卤代环丙烷的催化不对称合成。所开发的方法基于使用手性铑催化剂的2-卤代烯烃与叔丁基α-氰基-α-重氮乙酸酯的类苯甲酸酯环丙烷化反应,该催化剂可使用各种高度官能化的手性卤代环丙烷(F,Cl,Br和I ),高收率,适度的非对映选择性和出色的对映体比率。报告的方法代表了第一个通用的卤代丙烷催化对映选择性方法。