in Wiley Online Library (wileyonlinelibrary.com). NH 2 NHR + N N O I 2 [BMIm]Br O Cl R OA series of 2,3,3a,4-tetrahydro-3a-methylpyrrolo[1,2-a]quinazolin-5(1H)-one derivatives were synthesized by a reaction of 2-aminobenzamide and 5-chloropentan-2-one at 80 C catalyzed by iodine in ionic liquid of [BMIm]Br. Compared with the other methods, this novel method has the advantages of milder reaction conditions, high yields, environmental benignity, and metal-free catalyst.