Method of recovering halide values from carbonylation reaction mixtures
US4582929A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Dec 24, 1984 |
| Grant date | Apr 15, 1986 |
| Priority date | — |
| Expiry date | Dec 24, 2004 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C51/10
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
This invention is a process for the carbonylation of an organic halide to prepare a carbonyl-containing compound, and recovery of halogen values in a useful form which comprises PA0 (a) contacting an organic halide with carbon monoxide and an esterifying agent, a primary or secondary amine, or hydrogen gas, in an inert organic solvent in the presence of a water-insoluble tertiary amine or pyridine ring-containing compound, and a catalytic amount of a Group VIII metal catalyst, under conditions such that an organic ester, amide or aldehyde is prepared and the halide generated in the process forms a salt with tertiary amine or pyridine compound wherein the halide is bromine or iodine; PA0 (b) separating the organic ester, amide or aldehyde from the reaction mixture which contains the tertiary amine or pyridine compound-halide salt; PA0 (c) contacting the reaction mixture containing the tertiary amine or pyridine compound-halide salt mixture with a concentrated aqueous solution of an alkali metal base or alkaline earth metal base under conditions such that an aqueous solution of an alkali metal halide or an alkaline earth metal halide and reaction solution containing the tertiary amin…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.