Three-component synthesis of 4-aryl-1<i>H</i>-pyrimido[1,2-<i>a</i>]benzimidazole derivatives in ionic liquid
作者:Changsheng Yao、Song Lei、Cuihua Wang、Tuanjie Li、Chenxia Yu、Xiangshan Wang、Shujiang Tu
DOI:10.1002/jhet.215
日期:——
A green and simple synthesis of 4-ayrl-3,4-dihydro-1H-pyrimido[1,2-a]benzimidazolederivatives was accomplished in excellent yields via the reaction of aryl aldehyde, 1,3-dicarbonyl compounds and 1H-benzo[d]imidazol-2-amine in ionicliquid of [bmim+][BF 4−]. This protocol has the advantages of easier work-up, mild reaction conditions, high yields, and an environmentally benign procedure compared with
通过芳基醛,1,3-二羰基化合物和1 H的反应,以优异的收率完成了绿色简单的4-ayrl-3,4-dihydro-1 H-嘧啶[1,2- a ]苯并咪唑衍生物的合成。[bmim + ] [BF ]的离子液体中的-苯并[ d ]咪唑-2-胺。与已报道的方法相比,该方案具有易于后处理,反应条件温和,收率高和对环境无害的优点。J.杂环化学。(2010)。 4-