Synthesis of New Tetraheterocyclic Systems by the Mixed Condensation Reactions on [1,2,4]Triazolo[4,3‐a][1,5]benzodiazepines
作者:A. Boudina、A. Baouid、A. Hasnaoui、M. Essaber
DOI:10.1080/00397910500406443
日期:2006.3.1
Abstract We report here a one step synthesis of a new series of bis‐[1,2,4‐triazolo][4,3‐a:3′,4′‐d][1,5]benzodiazepines 3a–e and [1,2,4]oxadiazolo[5,4‐d][1,2,4]triazolo[4,3‐a][1,5]benzodiazepines 5a–c by the condensation reactions of diarylnitrilimines and arylonitrile oxides. This 1,3‐dipolar cycloaddition is completely regioselective. The structure of these products has been confirmed by 1H, 13C
摘要 我们在此报告了一系列新的双-[1,2,4-三唑并][4,3-a:3',4'-d][1,5]苯二氮卓类 3a-e 和 [ 1,2,4]恶二唑并[5,4-d][1,2,4]三唑并[4,3-a][1,5]苯二氮卓类5a-c通过二芳基腈亚胺和芳基腈氧化物的缩合反应。这种 1,3-偶极环加成是完全区域选择性的。这些产物的结构已通过1H、13C NMR和质谱证实。