Production of hex-3-enedioate esters from 1,4 dialkoxy butenes
US4611082A · kind A · utility
4Cited by
7References
17Claims
0Family size
Assignee
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Key dates
| Filing date | Nov 9, 1984 |
| Grant date | Sep 9, 1986 |
| Priority date | — |
| Expiry date | Nov 9, 2004 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C67/37
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
The dicarbonylation product of 1,4-dialkoxy substituted-2-butene is useful as intermediate in the production of adipic acid, hexamethylenediamine and 1,6-hexanediol. It is produced by carbonylating a solution of the dialkoxy substituted butene in a polar, aprotic non-basic solvent at 80.degree.-140.degree. C. in the presence of a catalyst comprising a halide of the transition metal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.