Reductive sulfur extrusion reaction of 2,1,3-benzothiadiazole compounds: a new methodology using NaBH4/CoCl2·6H2O(cat) as the reducing system
作者:Brenno A. DaSilveira Neto、Aline S. Lopes、Martina Wüst、Valentim E.U. Costa、Günter Ebeling、Jairton Dupont
DOI:10.1016/j.tetlet.2005.08.017
日期:2005.10
A new simple and efficient methodology for reductive sulfurextrusion from 2,1,3-benzothiadiazole compounds has been developed using NaBH4 in the presence of catalytic amounts of CoCl2·6H2O (1 mol %). This method is an efficient alternative for the generation of various 1,4-disubstituted-2,3-diaminobenzene derivatives from 4,7-disubstituted-2,1,3-benzothiadiazoles. The diamines can be easily converted