Title:One-pot Synthesis of 2,3-disubstituted-4(3H)-quinazolinone from o-aminobenzoic Acid and DMF Derivatives using Imidazole Hydrochloride as a Promoter
Volume: 21
Issue: 7
Author(s): Yin Wang, Xiuyu Zhang, Suzhen Li, Mengyi Guo, Wanqian Ma and Jianyong Yuan*
Affiliation:
- Department of Medicinal Chemistry, College of Pharmacy, Chongqing Medical University, Chongqing, 400016, PR China
Keywords:
Imidazole hydrochloride, 2, 3-disubstituted-4(3H)-quinazolinone, DMF derivatives, multicomponent reaction, Brönsted acid, transamidation.
Abstract: As a novel and environmentally friendly Brönsted acid, imidazole hydrochloride was
used to promote the synthesis of 2,3-disubstituted-4(3H)-quinazolinone from o-aminobenzoic
acid and DMF derivatives. The essence of this reaction is a multicomponent reaction, which
constructs multiple chemical bonds between different components through the transamidation
of imidazole hydrochloride. This protocol showed a wide range of functional group tolerance,
and a series of quinazolinones were synthesized in low to moderate yields without metal catalysts,
oxidants or other additives.