stereoselective deprotonation of N-Bus (Bus = tert-butylsulfonyl)-protected terminal aziridines with lithium 2,2,6,6-tetramethylpiperidide generates a nonstabilized (H-substituted) aziridinyl anion that undergoes in situ or external electrophile trapping under experimentally straightforward conditions to give trans-disubstituted aziridines in good to excellent yields.
[反应:参见正文] N-Bus(Bus =叔丁基磺酰基)保护的末端
氮丙啶与
2,2,6,6-四甲基哌啶锂的区域和立体选择性去质子化反应,生成不稳定的(H取代的)
叠氮基阴离子在实验上简单的条件下原位捕获或外部亲电捕获,以良好或极好的收率得到反式二取代的
氮丙啶。