Preparation of hexene-1,6-dioic acids
US5354887A · kind A · utility
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4References
15Claims
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Key dates
| Filing date | Dec 13, 1990 |
| Grant date | Oct 11, 1994 |
| Priority date | — |
| Expiry date | Dec 13, 2010 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C51/12
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Hexene-1,6-dioic acids, e.g., hex-3-ene-l,6-dioic acid, are prepared by reacting carbon monoxide and water with at least one diacyloxylated butene in a polar, aprotic and basic solvent, in the presence of a catalytically effective amount of palladium values, optionally a halide, and at least one inorganic halide, the cation of which being an alkali or alkaline earth metal and the anion of which being a chloride or bromide.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.