Stereocontrolled Aziridination of Imines via a Sulfonium Ylide Route and a Mechanistic Study
作者:Xiao-Fang Yang、Ming-Jie Zhang、Xue-Long Hou、Li-Xin Dai
DOI:10.1021/jo0257389
日期:2002.11.1
temperature. trans-Aziridines were also obtained when imines 1 and sulfinimines 9 were reacted with N,N-dimethylacetamide-2-dimethylsulfonium bromide (7) in the presence of a base, respectively. A mechanistic study showed that the stereochemistry of these reactions was controlled by the reactivity of the imines and ylides. A higher reactivity of imines and ylides favors the formation of cis-aziridines, whereas