Bidentate phosphite and nickel catalyst compositions for hydrocyanation of monoolefins
AssigneeE. I. Du Pont de Nemours and Company
InventorsKristina Ann Kreutzer, Wilson Tam
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Abstract
Processes for hydrocyanation of nonconjugated aliphatic monoolefins or monoolefins conjugated to an ester group utilizing a catalyst precursor composition comprising an unsymmetrical bidentate phosphite ligand and zero-valent nickel, preferably in the presence of a Lewis acid promoter, to produce a terminal organo-nitrile. Catalyst precursor compositions are also disclosed.
Claims8
A catalyst precursor composition comprising zero-valent nickel and a bidentate phosphite ligand of Formula I
- wherein:
- each R1 is independently a secondary or tertiary substituted hydrocarbyl of 3 to 12 carbon atoms;
- and
- each R2 is independently, H, X wherein x is Cl, F or Br, a C1 to C12 alkyl, or OR3 wherein R3 is C1 to C12 alkyl.
A catalyst precursor composition comprising zero-valent nickel and a bidentate phosphite ligand selected from the group consisting of Formulas II-VI as set forth below:
- wherein
- each R6 is independently a secondary or tertiary substituted hydrocarbyl of 3 to 12 carbon atoms;
- and
- each R7 is independently H, X wherein X is Cl, F or Br, a C1 to C12 alkyl, or OR8 wherein R8 is C1 to C12 alkyl;
- wherein
- each R9 is independently a secondary or tertiary substituted hydrocarbyl of 3 to 12 carbon atoms;
- each R10 is independently H, X wherein X is Cl, F or Br, a C1 to C12 alkyl, or OR8 wherein R8 is C1 to C12 alkyl;
- and
- each R11 is independently a branched or straight chain alkyl of up to 12 carbon atoms;
- wherein
- each R12 is independently a secondary or tertiary substituted hydrocarbyl of 3 to 12 carbon atoms;
- each R13 is independently H, X is wherein X is Cl, F or Br, a C1 to C12 alkyl, or OR8 wherein R8 is C1 to C12 alkyl;
- and
- each R14 is independently a branched or straight chain alkyl of up to 12 carbon atoms;
- wherein
- each R15 is independently a secondary or tertiary substituted hydrocarbyl of 3 to 12 carbon atoms;
- and
- each R16 is independently H, X wherein X is Cl, F or Br, a C1 to C12 alkyl, or OR8 wherein R8 is C1 to C12 alkyl;
- and
- wherein
- each R17 is independently a secondary or tertiary substituted hydrocarbyl of 3 to 12 carbon atoms;
- and
- each R18 is independently H, X wherein X is Cl, F or Br, a C1 to C12 alkyl, or OR8 wherein R8 is C1 to C12 alkyl.
Dependencies are inferred from the claim text.