Process for the preparation of methyl 4-oxobutyrate and its methanol addition products
US5072005A · kind A · utility
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14Claims
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Key dates
| Filing date | Jul 9, 1987 |
| Grant date | Dec 10, 1991 |
| Priority date | — |
| Expiry date | Jul 9, 2007 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07D315/00
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Methyl 4-oxobutyrate and its methanol addition products, methyl 4,4-dimethoxybutyrate and gamma-methoxy-gamma-butyrolactone, which are useful as intermediates in the preparation of such industrially important compounds as gamma-butyrolactone, 1,4-butanediol and glutamic acid, are produced from the reaction of acrolein, carbon monoxide and methanol in the presence of a catalyst system which consists of (a) a Group VIII metal component selected from palladium metal or a palladium-containing composition which generates palladium metal under reaction conditions, (b) a hydrogen halide and (c) an arylarsine catalyst copromoter.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.