Convenient synthesis of 2-aminonaphthalene-1-thiol and 3-aminoquinoline-4-thiol and cyclocondensations to 1,4-thiazino and 1,4-thiazepino derivatives

Article abstract of DOI:10.1055/s-1992-26191

An improved method for the synthesis of 2-aminonaphthalene-1-thiol and an alternative procedure for the preparation of 3-aminoquinoline-4-thiol are described. From these intermediates some 1,4-thiazino and 1,4-thiazepino tricyclic derivatives have been prepared.