Synthesis of (±)-aphanorphine: a new approach to tricyclic 3-benzazepine scaffold using two radical C–C bond-forming reactions
作者:Takehiko Yoshimitsu、Chie Atsumi、Emiko Iimori、Hiroto Nagaoka、Tetsuaki Tanaka
DOI:10.1016/j.tetlet.2008.05.058
日期:2008.7
expeditious approach to (±)-aphanorphine has been established using readily available starting materials. The present synthesis relies on the direct assembly between N-methylpyrrolidone (NMP) and 2-bromoanisaldehyde, which takes place through Et3B/air-mediated transformation of the α-nitrogen-substituted sp3C–H bond, and features a new design concept for the synthesis of the tricyclic 3-benzazepine skeleton
已经使用容易获得的起始原料建立了一种快速(±)-Aphanorphine的方法。本合成依赖于N-甲基吡咯烷酮(NMP)和2-溴茴香醛之间的直接组装,该组装是通过Et 3 B /空气介导的α-氮取代的sp 3 C–H键的转化而发生的,并且具有新的特征。设计概念合成三环3-苯并ze庚因骨架。