Hydrolysis catalyst and process
US10087201B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 24, 2013 |
| Grant date | Oct 2, 2018 |
| Priority date | — |
| Expiry date | May 24, 2033 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01J2231/322
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A process of hydrolyzing a monodentate, bidentate or tridentate phosphorus-based phosphite ester ligand or ligand blend for a transition metal catalyst comprising contacting the ligand or ligand blend with a hydrolysis catalyst of the formula (R11X11)nP(OH)3-n where n is 0, 1 or 2 wherein the ligand or ligand blend comprises one or more of (i) a bidentate biphosphite ligand of formula (III), (R12—X12)(R13—X13)P—X14—Y—X24—P(X22—R22)(X23—R23), (ii) a tridentate triphosphite ligand of formula (IIIA) (R12—X12)(R13—X13)P—X14—Y—X32—P(X34—R34)—(X33—Y2—K24—P(X23—R23)—(X22—R22) or (iii) a monodentate phosphite ligand of formula (IV) P(X1—R1)(X2—R2)(X3—R3) where each X is oxygen or a bond and each Y is an optionally substituted C6-C20 arylene, followed by separation of the ligand hydrolysis products.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.