Novel benzyne additions to the 1,2,5-thiadiazole and 1,2,5-selenadiazole ring systems
Abstract
Novel Modes of benzyne addition to 3,4-dimethyl-1,2,5-thiadiazole and 3,4-dimethyl-1,2,5-selenadiazole afford methyl derivatives of three heterocyclic systems: quinoxaline, 1,2-benzisothiazole, and 1,3-benzoselenazole respectively.