Conversion of 4-amino-4<i>H</i>-1,2,4-triazole to 1,3-bis(1<i>H</i>-azol-l-yl)-2-aryl-2-propanols and 1-phenacyl-4-[(benzoyl or 4-toluenesulfonyl)-imino]-(1<i>H</i>-1,2,4-triazolium) Ylides
作者:Anjana Narayanan、David R. Chapman、Subhash P. Upadhyaya、Ludwig Bauer
DOI:10.1002/jhet.5570300538
日期:1993.10
A series of 1,3-bis(1H-azol-1-yl)-2-aryl-2-propanols 17 were synthesized in an one-pot procedure by reacting l-aryl-2-(1H-1,2,4-triazol-l-yl)- or l-aryl-2-(1H-imidazol-l-yl)ethanones with dimethylsulfoxonium methide in the presence of either 1,2,4-triazole or imidazole. The aromatic groups in 17 were either 4-bromo-, 4-chloro-, 2,4-dichloro- or 2,4-difluorophenyl. 4-Amino-4H-1,2,4-triazole was acylated
通过一锅法通过使1-芳基-2-(1 H -1,2)反应,合成一系列1,3-双(1 H -azol-1-基)-2-芳基-2-丙醇17。在1,2,4-三唑或咪唑存在下,与4-甲基二甲基亚砜基合成的1-,4-三唑-1-基)-或1-芳基-2-(1 H-咪唑-1-基)乙酮。17中的芳族基团是4-溴-,4-氯-,2,4-二氯-或2,4-二氟苯基。将4-氨基-4 H -1,2,4-三唑用苯甲酰基或4-甲苯磺酰氯酰化,得到[4-(苯甲酰基或4-甲苯磺酰基)氨基] 4 H-1,2,4-三唑 随后用4-溴或4-氯苯甲酰基溴进行烷基化,生成1-(4-溴或4-氯苯甲酰基)-4-[(苯甲酰基-或4-甲苯磺酰基)氨基] -1 H -1,2,4-三唑鎓溴化物。这些盐的中和提供了相应的酰化物。