The Ullmann-type coupling reaction of vinyl bromides and imidazoles in ILs at 90–110 °C gave the corresponding N-vinylimidazoles in good to excellent yields by using L-proline as the ligand; the double bond geometry of the vinyl bromides was retained under the reaction conditions.
在90-110°C下,使用
L-脯氨酸作为
配体,在
离子液体中进行的
乙烯基溴和
咪唑的Ullmann型偶联反应,以良好至优异的产率得到了相应的N-
乙烯基咪唑;在反应条件下,
乙烯基溑的双键几何结构得以保持。