of isoprene (20 mol%) in THF at room temperature. By reacting this organolithium with carbonyl electrophiles 2-(hydroxyalkyl)imidazoles 3 were obtained, in good yields. As a result of the reaction of the mentioned lithium intermediate with imines 4, the corresponding 2-(aminoalkyl)imidazoles 5 were isolated in excellent yields.
通过新方案制备2-
锂硫代
咪唑,该新方案由在室温下在THF中亚
化学计量的
异戊二烯(20摩尔%)存在下略有过量的
锂金属组成。通过使该
有机锂与羰基亲电试剂反应,以良好的产率获得了2-(羟烷基)
咪唑3。作为上述
锂中间体与
亚胺4反应的结果,以优异的产率分离了相应的2-(
氨基烷基)
咪唑5。