A novel and efficient tributyltin azide-mediated synthesis of 1H-tetrazolylstilbenes from cyanostilbenes
作者:Narsimha Reddy Penthala、Shobanbabu Bommagani、Jaishankar Yadlapalli、Peter A. Crooks
DOI:10.1016/j.tetlet.2016.03.040
日期:2016.4
A novel and efficient route was established for the synthesis of a series of (Z)-5-(2-(heteroaryl-2-yl) and (Z)-5-(3-(heteroaryl-3-yl)-1-(phenyl)vinyl)-1H-tetrazoles (3a–g and 6a–f, respectively) from cyanostilbene analogs containing benzo[b]thiophene, benzo[b]furan, and indole moieties utilizing tributyltin azide as a Lewis acid. This 1,3-dipolar [3+2]cycloaddition of azide to the cyano group of the
建立了一种新颖且有效的路线来合成一系列(Z)-5-(2-(杂芳基-2-基)和(Z)-5-(3-(杂芳基-3-基)-1- (苯)乙烯基)-1 H-四唑(分别为3a - g和6a - f),它们来自氰基茂金属类似物,其中包含苯并[ b ]噻吩,苯并[ b ]呋喃和吲哚基团,使用三丁基叠氮化锡作为路易斯酸。叠氮化物的3,3-偶极[3 + 2]环加成到氰基茂金属前体分子的氰基上可提供相应四唑基茂金属类似物的良好产率,并且构成简单且成本有效的方法。