DABCO catalyzed highly regioselective synthesis of fused imidazo-heterocycles in aqueous medium
作者:Vikas M. Bangade、B. Chennakesava Reddy、Pramod B. Thakur、B. Madhu Babu、H.M. Meshram
DOI:10.1016/j.tetlet.2013.06.123
日期:2013.8
efficient regioselective synthesis of 3-aryl imidazo[1,2-a]pyridines, 5-aryl imidazo[2,1-b]thiazoles, and 3-aryl benzo[d]imidazo[2,1-b][1,3]thiazoles is described by the reaction of phenacyl bromide with heterocyclic amine in the presence of DABCO under aqueous medium. The method is applicable for a variety of substituted phenacyl bromides as well as 2-amino-heterocycles. An aqueous reaction medium, regioselectivity
有效的区域选择性合成3-芳基咪唑并[1,2- a ]吡啶,5-芳基咪唑并[2,1- b ]噻唑和3-芳基苯并[ d ]咪唑并[2,1- b ] [1, 3]噻唑的描述是在水介质中在DABCO存在下,苯甲酰溴与杂环胺反应。该方法适用于各种取代的苯甲酰溴以及2-氨基杂环。水性反应介质,区域选择性,温和的反应条件和高产率的产物是该方案的重要特征。