Reductive Condensation of a Nitro Group with Carboxylic Acids Promoted by Phosphorus(III) Compounds: A Short Route to 5H-Dibenzo[b,e][1,4]diazepin-11(10H)-ones
作者:Zbigniew Wróbel、Michał Tryniszewski、Robert Bujok、Roman Gańczarczyk
DOI:10.1055/s-0040-1707347
日期:——
Abstract Tributyl- or triphenylphosphine promotes a one-pot, three-step method for the synthesis of differently substituted dibenzodiazepinones from N-aryl-2-nitroanilines. Pyridine analogues and the corresponding thiazepinones can also be formed using this method. The process involves deoxygenation of the nitro group, then formation of an iminophosphorane intermediate and its intramolecular condensation
摘要 三丁基或三苯基膦促进了一锅三步法,从N-芳基-2-硝基苯胺合成不同取代的二苯并二氮杂酮。吡啶类似物和相应的噻嗪酮也可以使用这种方法形成。该方法包括使硝基脱氧,然后形成亚氨基磷烷中间体,以及其与置于N-芳基中的羧基的分子内缩合。讨论了羧基在亚氨基磷烷的形成中的作用和环化方式。