| abstract |
The present invention relates to a method for the hydrocyanation of organic ethylene-unsaturated compounds into compounds including at least one nitrile function. The present invention provides a method for the hydrocyanation of a hydrocarbon compound including at least one ethylenic unsaturation by reaction in a liquid medium with hydrogen cyanide in the presence of a catalyst including a metal element selected from among the transition metals and an organophosphorous ligand including, in one embodiment of the invention, an organophosphorous compound with formula (I), in which: R 1 , R 2 , R 3 , R 4 , which can be identical or different, are a hydrogen atom, a linear or branched alkyl radical with one to twelve carbon atoms which may contain heteroatoms, a radical including an aromatic or cycloaliphatic radical, optionally substituted, which may include heteroatoms, a carbonyl, alcoxycarbonyl or alcoxy radical, a halogen atom, a nitrile group or a halogen-alkyl group having one to twelve carbon atoms; and X is a halogen atom selected from the group including fluorine and bromine. The present invention can be used in particular for the synthesis of adiponitrile from butadiene. |