Studies in sulfoxide rearrangement: Regioselective synthesis of thieno[3,2-f]quinolin-7(6H)-one derivatives

Article abstract of DOI:10.1016/S0040-4020(98)00685-1

6-Mercapto-1-methylquinolin-2(1H)-one (3) was prepared in situ by the reductive cleavage of the corresponding disulfide 2 with Zn dust and acid. The disulfide 2 was in turn prepared via xanthate after diazotisation of 6- amino-1-methylquinolin-2-(1H)-one