Apr-May 1991 Photochemical Synthesis of 2-Substituted Benzothiazoles Sengoden Muthusamy, Rangasamy Paramasivam and Vayalakkavoor T. Ramakrishnan* Department of Organic Chemistry, University of Madras, Madras-600 025, India Received August 7, 1990 759 The photochemical reaction of 1-indolethiocarbanilides 1, di- and tri-substituted thioureas 3-5 and 4,4-di- methyl-2,6-dioxothiocyclohexanecarboxanilides 9 affording the respective ...