作者:Ling Zhou、Jie Chen、Chong Kiat Tan、Ying-Yeung Yeung
DOI:10.1021/ja201627h
日期:2011.6.22
A facile and efficient enantioselective bromoaminocyclization of unsaturated sulfonamides has been developed using an amino-thiocarbamate catalyst. A range of enantioenriched pyrrolidines were prepared with up to 99% yield and 99% ee. The corresponding lactams could be obtained through oxidation of the pyrrolidines.
使用氨基-硫代氨基甲酸酯催化剂开发了一种简便有效的不饱和磺酰胺的对映选择性溴氨基环化。制备了一系列对映体富集的吡咯烷,产率高达 99%,ee 高达 99%。通过氧化吡咯烷可以得到相应的内酰胺。