2-Propynylamines from 1,1-Dibromo-1-alkenes Easily accessible 1,1-dibromo-1-alkenes 1 react with primary or secondary amines in a complex series of reactions to give directly N-substituted or N,N-disubstituted (1-Alkyl-1-aryl-2-propynyl)- amines 5 in useful yields. This simple method avoids the isolation of the intermediates (bromoacetylenes or bromoallenes) and makes a series of 2-propynylamines with an acetylenic hydrogen available.
从 1,1-二
溴-1-
烯中制备 2-
丙炔胺 易于获得的 1,1-二
溴-1-
烯 1 与
伯胺或仲胺发生一系列复杂的反应,以有用的收率直接得到 N-取代或
N,N-二取代的(1-烷基-1-芳基-2-
丙炔基)-胺 5。这种简单的方法避免了中间产物(
溴乙炔或
溴甲
烯)的分离,并可得到一系列带有
乙炔态
氢的 2-
丙炔胺。