Kinetics and mechanism of condensation reactions of thiobenzamides and N-substituted thioureas
作者:Luciano Forlani、Carla Boga
DOI:10.1039/b111538n
日期:2002.3.25
The condensation reaction of thiobenzamides and of N-substitutedthioureas in dimethyl sulfoxide or in methanol, in the presence of the mixture DMSO–H+–X− (X = Cl, Br) produces 1,2,4-thiadiazole derivatives. Kinetic investigation emphasizes the importance of the presence of dimethyl sulfoxide, of halide ions and of an acidic catalyst. For reactions of thiobenzamide, the bromide ion increases the reaction