Catalyst-free tandem Michael addition-cyclization reactions in aqueous media for the synthesis of benzimidazo[1,2-a]pyrimidinone derivatives
作者:ChuanLi Ren、Yan Wang、Dong Wang、YongJun Chen、Li Liu
DOI:10.1007/s11426-010-4033-9
日期:2010.7
The catalyst-free reactions of Baylis-Hillmanalcohols (1a-i) with 2-aminobenzimidazole (2) in THF-H2O (1:4) were developed for the convenient and greener synthesis of benzimidazo[1,2-a]pyrimidinone derivatives (3a-i). The pesticidal activities of 3a-i were examined to investigate a new biological activity of the imidazo[1,2-a]pyrimidinone-type compounds.