Ring contraction of thia(seleno)diazine rings into pyrazoles in the reaction of 3-aryl-10-methyl-2H-1,3,4-thia(seleno)diazino[3, 2-a]benzimidazolium salts with bases
1-Amino-3-alkyl-2-(methylthio)benzimidazolium salts: synthesis, reaction with CH-acid anions, and conversion to pyrazolo[1,5-a]benzimidazole derivatives
作者:T. A. Kuz'menko、V. V. Kuz'menko、A. F. Pozharskii、O. V. Kryshtalyuk、G. G. Aleksandrov