Collect. Czech. Chem. Commun.
1993, 58, 1191-1194
https://doi.org/10.1135/cccc19931191
Synthesis of Some New Type of Naphthothiazole Triazoles from Lawsone
Vedula Rajeswar Rao, Vedula M. Sharma and Tadepally V. Padmanabha Rao
Department of Chemistry, Kakatiya University, Warangal 506009, India
Abstract
A series of 3-aryl naphto[2',3':4,5]thiazolo[3,2-b-1,2,4-triazolo-5,10-diones (V) have been prepared by the condensation of bromo lawsone (I) with 5-mercapto-3-substituted 1,2,4-triazole (II) followed by cyclization of the resulting uncyclized products (IV) with alkohol and sulfuric acid. The products are identical with the condensation products of 2,3-dichloro naphthoquinone (III) with 5-mercapto-3-substituted 1,2,4-triazoles in the presence of anhydrous alcohol containing fused sodium acetate.
