Electrochemical ring-contraction of fused [1,3,4]thiadiazinium salts: preparation of fused pyrazole derivatives
作者:Pedro Molina、M. Desamparados Velasco、Antonio Arques
DOI:10.1016/s0040-4020(01)87776-0
日期:1990.1
The electroreduction of several fused [1,3,4]-thiadiazinium salts on mercury pool cathode in an aprotic medium has been studied. In preparative experiments using dimethylformamide 0.2 M in lithium perchlorate as the electrolyte, the [1,3,4]-thiadiazinium salts 1-3 formed a mixture of the corresponding fused pyrazoles and ketimines. On the basis of results of preparative electrolyses (products and reaction
在非质子介质中,研究了几种熔融的[1,3,4]-噻二嗪盐在汞池阴极上的电还原。在使用中的高氯酸锂二甲基甲酰胺的0.2M作为电解质制备的实验中,[1,3,4] -thiadiazinium盐1 - 3形成的相应融合吡唑和酮亚胺的混合物。根据制备性电解(产物和反应电位)和循环伏安图的结果,提出了一种可能的机理。