An Efficient One-Pot Three-Component Synthesis of Some New 3-(Benzo[d]thiazol-2-yl)-2-alkyl-4(3H)-quinazolinones Using Silica Sulfuric Acid as a Heterogeneous Catalyst

摘要

Silica sulfuric acid catalyzed one-pot synthesis of some new 3-(benzo[d]thiazol-2-yl)-2-alkyl or 3-(2-benzimidazolyl)-2-alkyl quinazolin-4(3H)-one by condensation of a three component of antheranilic acid, 2-aminobenzothiazole or 2-aminobenzimidazole, and orthoesters under microwave irradiation.