The comparative reactivity of heterocyclic diazo compounds and the corresponding diazonium salts in C-azo coupling reactions was studied using imidazole, pyrazole, and triazole derivatives as examples.The reactivities of pyrazole- and imidazole-derived diazonium salts are much lower than those of thiadiazole- and 1,2,4-triazole-derived diazonium salts but higher than those of pyrrole and indole diazo
以
咪唑、
吡唑和三唑衍
生物为例,研究了杂环重氮化合物和相应的重氮盐在C-偶氮偶联反应中的反应活性。
吡唑和
咪唑衍生的重氮盐的反应性远低于
噻二唑-和
1,2,4-三唑衍生的重氮盐,但高于
吡咯和
吲哚重氮化合物。