4-(ortho-hydroxyphenyl)-1,2,3-thiadiazoles and -1,2,3-selenadiazoles, smoothly transform into 2-benzofuranthiolates and -selenolates. These reactive intermediates can be alkylated in high yield. This reaction sequence could be applied to the synthesis of electron rich thiacrown ethers. The 2-(ortho-aminophenyl)-alkynethiolate analogously forms 2-methylsulfanylindole.
2-(邻羟基苯基)-alkynethiolates和-selenolates,通过碱催化的环切割得到的4-(邻-羟基苯基)-1,2,3-
噻二唑和1,2,3- selenadiazoles,顺利转化为2-
苯并呋喃硫醇盐和-
硒醇盐。这些反应性中间体可以高产率烷基化。该反应序列可以用于合成富电子的
硫杂
冠醚。2-(邻-
氨基苯基)-炔
硫醇类似地形成2-甲基磺
酰亚胺基。