The hydroboration reaction of acetylenic amines R1R2NCH(R3)CCR4 was studied. We report the first results of a study of the reactivity of dialkylborane R2BH towards these amines which allow us to propose a new method for the synthesis of differently substituted β-ethylenic amines. The regioselectivity and the stereoselectivity of this reaction are examined and allow us to set out the possibility
Hydroboration and iodination of acetylenic and brominated acetylenic amines, give ethylenic amines in which the double bond is demonstrated by the formation of trans-substituted equivalent boranes. Taking advantage of regioselective and stereoselective results, thermodynamic control is assumed. A kinetic study of the evolution of the reaction products confirms this hypothesis.