1,3-Dipolar cycloaddition to benzazetes. Formation of 1,3,5-oxadiazepines
作者:Charles W. Rees、Ratnasamy Somanathan、Richard C. Storr、Anthony D. Woolhouse
DOI:10.1039/c39750000740
日期:——
Nitrile oxides react with 2-phenylbenzazete to give labile initial cycloadducts (3) which rearrange very readily to give 1,3,5-oxadiazepines (7) presumably via an oxaziridine (5), thus providing independent support for the widely assumed intermediacy of oxaziridines in photochemical rearrangements of heterocyclic N-oxides.
腈氧化物与2-苯基苯并ze庚因反应生成不稳定的初始环加合物(3),该环加合物很容易重排生成1,3,5-氧杂二氮杂卓(7),大概是通过一个oxaziridine(5),因此为广泛假定的oxaziridines中间体提供了独立的支持在杂环N-氧化物的光化学重排中。