Diversity-oriented synthesis of dihydrobenzoxazepinones by coupling the Ugi multicomponent reaction with a Mitsunobu cyclization
作者:Lisa Moni、Luca Banfi、Andrea Basso、Alice Brambilla、Renata Riva
DOI:10.3762/bjoc.10.16
日期:——
An operationally simple protocol for the synthesis of 2,3-dihydrobenzo[f][1,4]oxazepin-3-ones, based on an Ugi reaction of an ortho-(benzyloxy)benzylamine, glycolic acid, an isocyanide and an aldehyde, followed by an intramolecular Mitsunobu substitution was developed. The required ortho-(benzyloxy)benzylamines have been in situ generated from the corresponding azides, in turn prepared in high yields
基于邻(苄氧基)苄胺、乙醇酸、异氰化物和醛的 Ugi 反应,合成 2,3-二氢苯并[f][1,4] oxazepin-3-ones 的操作简单方案,随后开发了分子内光信取代。所需的邻(苄氧基)苄胺已由相应的叠氮化物原位生成,进而由水杨酸衍生物以高产率制备。