Improved hydrocyanation process

Details Improved hydrocyanation process Improved hydrocyanation process

C - Chemistry, Metallurgy

07

C

C07C 253/10 (2006.01) C07C 255/03 (2006.01) C07F 9/145 (2006.01)

Patent

CA 2291640

The present invention provides a process for hydrocyanation comprising reacting a nonconjugated, ethylenically unsaturated compound in a two phase process solvent with HCN in the presence of a Lewis acid promoter and a catalyst system comprising zero-valent nickel and an organic phosphorous containing ligand having the structure. (PR2)n R' where n is an integer from 1 to 2, R and R' are organic residues which may be the same or different and where the R or R' contains at least one C9 to C40 aliphatic group positioned as a tail extending away from the primary ligand structure rendering the ligand lipophilic.

L'invention concerne un procédé d'hydrocyanuration consistant à faire réagir un composé insaturé en éthylène non conjugué, dans un solvant à processus en deux phases, avec de l'acide cyanhydrique, en présence d'un promoteur à acide de Lewis et d'un système de catalyseur qui comprend du nickel à valence nulle et un ligand à base de phosphore organique ayant la structure (PR2)nR'. Dans la dite structure, n est un entier allant de 1 à 2; R et R' sont des résidus organiques qui peuvent être identiques ou différents; on trouve dans R ou R' au moins un groupe aliphatique C9-40 placé comme extrémité s'étendant depuis la structure de ligand primaire qui rend le ligand lipophile.

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