Patent ID: 6197992
Filing Date: 2001-03-06
Classification: C07C

Abstract:
A process for preparing mixtures of monoolefinic C.sub.5 mononitriles having nonconjugated C.dbd.C and C.tbd.N bonding by catalytic hydrocyanation of a hydrocarbon mixture containing 1,3-butadiene, wherein the hydrocarbon mixture is reacted with hydrogen in the presence of a hydrogenation catalyst capable of hydrogenating alkynes and 1,2-dienes with high selectivity without significantly diminishing the 1,3-butadiene content in order to remove alkynes, 1,2-dienes and mixtures thereof partially or completely so that the proportion of those components in the hydrocarbon mixture which impair the catalytic hydrocyanation is diminished and then subjecting the resulting mixture to catalytic hydrocyanation.