One Pot Synthesis of 4-Arylbenzoxazolo[3,2-a]-s-triazine-2-thiones

Abstract

The reaction of 2-aminobenzoxazoles (1a-b) with aroyl isothiocyanates in acetone gave 4-arylbenzoxazolo [3,2-a]-s-triazine-2-thiones (3a-g), aroylthioureas (5a-e) and 2-benzoxazolones (6a-b). A reasonable pathway for the formation of 3, 5 and 6 from 1 has been suggested.