Processes and catalyst compositions for hydrocyanation of monoolefins
Patent 5723641 Issued on March 3, 1998. Estimated Expiration Date: September 26, 2016. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
556/13, Phosphorus containing502/162, Organic phosphorus or nitrogen, except the ammonium ion556/138, Iron, cobalt, or nickel containing (Fe, Co, or Ni)558/338, Organic material which contains phosphorus, arsenic, or antimony, in addition to nickel, utilized (e.g., zero-valent nickel complexes, etc.)568/12Ring phosphorus containing
Processes for hydrocyanation of nonconjugated acyclic aliphatic monoolefins, monoolefins conjugated to an ester group, or monoolefins conjugated to a nitrile group which utilize a catalyst precursor composition comprising a bidentate phosphite ligand and zero-valent nickel preferably in the presence of a Lewis acid promoter. Catalyst precursor compositions are also disclosed.
Baker, M.J. et al, "Chelating Diphosphite Complexes of Nickel(0) and Platinum(0): Their Remarkable Stability and Hydrocyanation Activity", J. Chem. Soc., Chem. Commun., pp. 803-804 (1991)
Baker, M.J. et al, "Chiral Aryl Diphosphites: A New Class of Ligands for Hydrocyanation Catalysis", J. Chem. Soc., Chem. Communi., 1292-1293 (1991)