Patent ID: 6242633
Filing Date: 2001-06-05
Classification: B01J,C07C,C07F

Abstract:
A process for preparing mixtures of monoolefinic C.sub.5 mononitriles with nonconjugated C.dbd.C- and C.tbd.N bonds by catalytic Hydrocyanation of butadiene or of a 1,3-butadiene-sontaining Hydrocarbon mixture, which comprises carrying out the hydrocyanation in the presence of a nickel(O) complex catalyst having a mono-, bi- or multidentate phosphonite ligand of the formula I ##STR19##whereA is, together with the part of the phosphonite group to which it is bonded, a 5- to 8-membered heterocycle which may additionally be fused once, twice or three times to cycloalkyl, aryl and/or hetaryl where the fused groups may in each case have one, two or three substituents selected from alkyl, alkoxy, halogen, nitro, cyano or carboxyl,R.sup.1 is alkyl, aryl or hetaryl, each of which may have one, two or three of the following substituents: alkyl, cycloalkyl, aryl, alkoxy, cycloalkyloxy, acyl, aryloxy, halogen, trifluoromethyl, nitro, cyano, carboxyl or NE.sup.1 E.sup.2, where E.sup.1 and E.sup.2 may be identical or different and are alkyl, cycloalkyl or aryl, orR.sup.1 is a radical of the formula II--X--O--Y (II)whereX is a C.sub.3 -C.sub.6 -alkylene bridge which may have one, two or three double bonds and/or be fused once, twice or three times with aryl and/or hetaryl, where the aryl or hetaryl groups may have one, two or three of the following substituents: alkyl, cycloalkyl, aryl, alkoxy, cycloalkyloxy, aryloxy, halogen, trifluoromethyl, nitro, cyano, carboxyl or NE.sup.1 E.sup.2, where E.sup.1 and E.sup.2 have the abovementioned meanings,Y is a radical of the formula III.1 or III.2 ##STR20##whereD can have the meanings stated previously for A,or salts and mixtures thereof.