Synthetic and Mechanistic Studies of Indium-Mediated Allylation of Imines in Ionic Liquids
作者:Man Chun Law、Tin Wai Cheung、Kwok-Yin Wong、Tak Hang Chan
DOI:10.1021/jo062198x
日期:2007.2.1
Aldimines derived from aryl and non-enolizable aliphatic aldehydes were allylated with allyl bromide mediated by indium powder in [bpy][BF4] (bpy = N-butylpyridine) to give good yields of the corresponding homoallylic amines. Selective formation of monoallylated amines can be achieved by varying the amount of bromide ion additive in the form of [bpy][Br]. The transient organoindium intermediates, allylindium(I)
在[bpy] [BF 4 ](bpy = N-丁基吡啶)中,将铟粉介导的烯丙基溴与烯丙基溴烯丙基化衍生自芳基和不可烯化的脂肪族醛的醛亚胺,以得到相应的均烯丙基胺良好的收率。可以通过改变[bpy] [Br]形式的溴离子添加剂的数量来实现单烯丙基化胺的选择性形成。通过NMR光谱研究了反应中形成的瞬态有机铟中间体,烯丙基(I)和烯丙基(III)二溴化物。