A wide variety of quinazolinone derivatives have been synthesized by condensation of 3-amino-1,2,4-trazole and 2-aminobenzimidazole as amine sources, with aromatic aldehydes and dimedone in the presence of 10 mol % of molecular iodine in acetonitrile under reflux conditions through one-pot reactions. Environmental acceptability, low cost, no need of chromatographic separation, and high yields are the important features of this protocol. (C) 2013 Elsevier Ltd. All rights reserved.
An efficient, one-pot three components synthesis of [1,2,4] triazoloquinazolinone derivatives using anthranilic acid as green catalyst
A simple, efficient and convenient approach has been reported for the synthesis of quinazolines by the condensation of 3-amino, 1,2,4-triazole with dimedone and different aromatic aldehydes in the presence of anthranilic acid as a catalyst through a one-pot reaction. The high yield, at low cost, with no need of chromatographic separation, and the environmentally friendly catalyst are the prominent