A facile and highly enantioselective approach towards 2-substituted 3-bromopyrrolidines has been developed. The process involves an amino-thiocarbamate catalyzed bromoaminocyclization of 1,2-disubstituted olefinic amides. The pyrrolidine products could readily be converted into other useful building blocks including a dihydropyrrole and a 2-substituted pyrrolidine.
我们开发出了一种简便、高对映选择性的 2-取代
3-溴吡咯烷方法。该工艺涉及 1,2-二取代烯烃酰胺在
氨基
硫代
氨基甲酸酯催化下的
溴化
氨基环化反应。
吡咯烷产物可以很容易地转化成其他有用的结构单元,包括二氢
吡咯和 2-取代的
吡咯烷。