Summary. A simple and convenient method for the synthesis of diverse 2-thioxo-2, 3- dihydroquinazolin-4 (1 H)-ones was developed as one-pot reaction of anthranilic acid esters, primary amines, and bis (benzotriazolyl) methanethione in presence of the amidine base DBU.
[Reddy, Ch. K.; Reddy, P. S. N.; Ratnam, C. V. Indian Journal of Chemistry, Section B: Organic Chemistry Including Medicinal Chemistry, 1987 , vol. 26, # 1-12 p. 882 - 883]
