作者:S. V. Makarov、E. V. Kudrik、K. A. Davydov
DOI:10.1134/s1070363206100173
日期:2006.10
The kinetics of decomposition of thiourea and N-methylthiourea S,S-dioxides in alkaline aqueous medium and their reactions with oxygen, Indigo Carmine, and Acid Yellow I I were studied. The decomposition of thiourea S,S-dioxides in weakly alkaline media was found to follow two pathways leading to the formation of ammonia and sulfoxylate ion, respectively. The second pathway predominates in strongly alkaline media. Thiourea S,S-dioxides can be used for selective reduction of azo compounds to the corresponding hydrazo derivatives.