Dual Synthesis of 1H-[1,2,4]Triazolo[3,4-a]isoindoles and New 1H-[1,2,4]Triazolo[5,1-a]isoindoles − Experimental and Theoretical Approaches
作者:Patrice Woisel、Gheorghe Surpateanu、François Delattre、Marc Bria
DOI:10.1002/1099-0690(200104)2001:7<1407::aid-ejoc1407>3.0.co;2-n
日期:2001.4
4H-[1,2,4]triazol-1-ium phenylmethylides 8c−e and the new 5-aryl-1-phenacyl-1H-[1,2,4]triazolo[5,1-a]isoindole core 13 are reported for the first time. Treatment of triazolium salts 6c−e with triethylamine in the presence of picryl chloride resulted in a regioselective mixture of disubstituted ylides 7c−e and 8c−e. Intramolecular annulation of the latter in DMSO resulted in the formation of 1H-[1,2
4-取代的4 H- [1,2,4]三唑-1-鎓苯基甲基8c - e和新的5-芳基-1-苯甲酰基-1 H- [1,2,4]三唑[首次报道了5,1- α ]异吲哚核13。在氯化苄基存在下用三乙胺处理三唑鎓盐6c - e会产生区域选择性的双取代乙叉化物7c - e和8c - e混合物。后者在DMSO中的分子内环化导致形成1 H- [1,2,4] triazolo [3,4- a]异吲哚和1 H- [1,2,4]三唑[5,1- a ]异吲哚衍生物。为了解释这种异常的化学行为,还提出了一种使用AM1和PM3程序方法的理论方法。