On the mechanism of the direct acid catalyzed formation of 2,3-disubstituted imidazo[1,2-a]pyridines from 2-aminopyridines and acetophenones. Concurrence between ketimine and Ortoleva–King type reaction intermediated transformations
作者:Vanya B. Kurteva、Lubomir A. Lubenov、Daniela V. Antonova
DOI:10.1039/c3ra45005h
日期:——
Direct acid catalyzed formation of 2,3-disubstitutedimidazo[1,2-a]pyridines from 2-aminopyridines and acetophenones was studied in order to gain insight into the reaction mechanism. The formation of differently substituted products was explained by a concurrent ketimine and Ortoleva–King type reaction intermediated transformations. The dependence of the reaction output on the catalyst used and on
为了直接了解反应机理,研究了由2-氨基吡啶和苯乙酮直接酸催化形成2,3-二取代的咪唑并[1,2- a ]吡啶。并发的酮亚胺和Ortoleva-King型反应中间转化同时解释了取代基不同的产物的形成。讨论了反应输出对所用催化剂以及对苯乙酮和吡啶取代基的依赖性。