<i>Ipso</i>- or <i>C</i><i>ine</i>-Substitutions of 6-Haloimidazo[1,2-<i>a</i>]pyridine Derivatives with Different Azoles Depending on the Reaction Conditions
作者:Cécile Enguehard、Hassan Allouchi、Alain Gueiffier、Stephen L. Buchwald
DOI:10.1021/jo034439w
日期:2003.7.1
The reactivity of 6-haloimidazo[1,2-a]pyridine toward different azoles is reported. The process was shown to be highly dependent on the reaction conditions. Using copper(I) catalyst, the product of ipso substitution was obtained. In the absence of copper, with cesium carbonate in N,N-dimethylformamide, a cine substitution took place.
报道了6-卤代咪唑并[1,2-a]吡啶对不同的唑类的反应性。结果表明该方法高度依赖于反应条件。使用铜(I)催化剂,获得了ipso取代的产物。在没有铜的情况下,在N,N-二甲基甲酰胺中存在碳酸铯,发生了电影替换。