A cascadesynthesis of quinazolinones from 2-aminobenzonitriles and aryl bromides through a palladium-catalyzedcarbonylation reaction has been developed. Various quinazolinones were produced in moderate to excellent yields. The reactions go through aminocarbonylation of aryl bromides–hydration of nitriles–cyclization sequence. Notably, all the products were isolated by recrystallization.