A thiazine-S-oxide, Staudinger/aza-Wittig based synthesis of benzodiazepines and benzothiadiazepines
作者:Balques Anwar、Paul Grimsey、Karl Hemming、Matthew Krajniewski、Christina Loukou
DOI:10.1016/s0040-4039(00)01797-4
日期:2000.12
A new approach to the synthesis of imine containing 1,2,5-benzothiadiazepine-1,1-dioxides and 1,4-benzodiazepin-5-ones using iminophosphoranyl thiazine-S-oxides as precursors is reported. Key steps include a Staudinger reaction, an aza-Wittig reaction and the conversion of a thiazine-S-oxide into an amino ketone via a [2,3] sigmatropic rearrangement.
报道了一种新的合成方法,该方法使用亚氨基磷杂烷基噻嗪-S-氧化物作为前体,合成含有1,2,5-苯并二氮杂二氮杂-1,1-二氧化物和1,4-苯并二氮杂-5-酮的亚胺。关键步骤包括Staudinger反应,Aza-Wittig反应以及噻嗪S-氧化物通过[2,3]σ重排转变为氨基酮。