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US 2003/0212288 A1Published application
Phosphonite ligands and their use in hydrocyanation
AssigneeInvista North America S.A.R.L.
InventorsChristian P. Lenges, Helen S. M. Lu, Joachim C. Ritter
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Abstract
Disclosed herein are processes for hydrocyanation and isomerization of olefins by using at least one multidentate phosphonite ligands, including organometallic phosphonite ligands with a Group VIII metal or Group VIII metal compound, and optionally, a Lewis acid promoter.
Claims10
A hydrocyanation process, said process comprising:
- contacting an ethylenically unsaturated olefin compound with HCN in the presence of a catalyst composition, wherein said catalyst composition comprises a Group VIII metal and a phosphonite ligand wherein the ligand having a structure selected from the group consisting of:
- 28
- wherein X and Q are as described in Formula II, and L is a linking group selected from the group consisting of -CR1 R2—, —O—, —S—, —CO— (wherein each of R1-R2 are independent of one another, are a hydrogen atom, a C1-12 alkyl group, or an aryl group), and each of m and m′ which are independent of each other, are 0 or 1.
The use of a catalyst based on a ligand of structure III for the hydrocyanation and/or the positional isomerization or double bond isomerization of olefins.
Dependencies are inferred from the claim text.