Highly enantioselective synthesis of spirocyclopropyloxindoles via a Rh(<scp>ii</scp>)-catalyzed asymmetric cyclopropanation reaction
作者:Yongjian Chi、Lihua Qiu、Xinfang Xu
DOI:10.1039/c6ob02160c
日期:——
carboxylate complex catalyzed enantioselective cyclopropanation reaction of N-Boc diazooxindoles with olefins, including aryl, alkyl, cyclic, and disubstituted olefins, under mild conditions is described. This reaction provides complementary access to the corresponding chiral spirocyclopropyloxindole products in good to high yields with good to excellent enantioselectivities.