Synthesis and properties of sulfo-containing tetrazolium betaines and their formazan precursors
作者:V. M. Ostrovskaya、L. K. Shpigun、Ya. V. Shushenachev、A. K. Buryak、A. S. Peregudov
DOI:10.1134/s1070363215090066
日期:2015.9
betaine―were synthesized by the oxidative cyclization of 1,3-diphenyl-5-(4-sulfophenyl)formazan and 5-(4-nitrophenyl)-3-phenyl-1-(4-sulfophenyl)formazan under the action of N-bromosuccinimide. The synthesis of sulfoformazans is accompanied by formation of azo coupling products with substitution of the sulfo group in the hydrazone molecule by the arylazo group. Spectral and voltage–current characteristics