Indolo[2,3-a]quinolizines 3 were stereoselectively synthesized by the intramolecular double Michael reaction of amide esters 2, the indole nitrogen of which was protected with a tosyl group, using ButMe2SiOSO2CF3 in the presence of Et3N.
吲哚并[2,3-一个]喹嗪类3被立体选择性地由酰胺酯的分子内双迈克尔反应合成2,吲哚氮,其中用甲苯磺酰基保护时,使用卜吨我2 SiOSO 2 CF 3在Et的存在3 N.