AN UNUSUAL REACTION BETWEEN THE ESTERS OF N-HYDROXY-2-THIOPYRIDONE AND ACTIVATED AZO COMPOUNDS

Article abstract of DOI:10.1016/S0040-4020(01)86234-7

The esters 1 of N-hydroxy-2-thiopyridone react smoothly at room temperature in a thermal reaction with diethyl azo-dicarboxylic ester to furnish adducts 2 of a novel structure.Photolysis of these adducts affords a convenient route to the little known tetrazanes 8.Azo compounds without electron withdrawing groups do not react.The Cookson reagent, however, is so reactive that it gives diacyl derivatives of type 14.