作者:Rudolph A. Abramovitch、Joseph M. Beckert、Harry H. Gibson,、Anthony Belcher、Greg Hundt、Tommy Sierra、Santiago Olivella、William T. Pennington、Albert Solé
DOI:10.1021/jo001382u
日期:2001.2.1
The generation of the 1,2,4-triazolyl cation (1) has been attempted by the thermolysis and photolysis of 1-(1,2,4-triazol-4-yl)-2,4,6-trimethylpyridinium tetrafluoroborate (2) and the thermolysis of 1- and 4-diazonium-1,2,4-triazoles, using mainly mesitylene as the trapping agent. Thermolysis of 2 gave mostly 1,2,4-triazole, together with 3-(1,2,4-triazol-4-yl)-2,4,6-trimethylpyridine, 4-(1,2,4-triazol-4-ylmethyl)-2
1,2,4-三唑基阳离子(1)的产生已通过1-(1,2,4-triazol-4-yl)-2,4,6-三甲基吡啶四氟硼酸(2 )和1-和4-重氮-1,2,4-三唑的热解,主要使用均三甲苯作为捕集剂。2的热解主要产生1,2,4-三唑以及3-(1,2,4-三唑-4-基)-2,4,6-三甲基吡啶,4-(1,2,4-三唑- 4-基甲基)-2,6-二甲基吡啶和4-(2,4,6-三甲基苄基)-2,6-二甲基吡啶。在均三甲苯存在下,每种重氮盐的热分解再次主要得到三唑以及极低产率的1-(1,2,4-三唑-1-基)-2,4,6-三甲基苯和相应的-4 -基异构体的比例大致相同。另一方面,2在均三甲苯中的光解主要产生1-(1,2,4-三唑-1-基)-2,4,6-三甲基苯。已经观察到光致电子从均三甲苯转移至2,并且已经进行了2和相应的2,4,6-三苯基吡啶鎓盐的初步激光闪光光解。观察到的瞬变被解释为是由吡啶盐的第一