Process for the preparation of .alpha.-methyl-2-thiopheneacetic acid derivatives
US5650522A · kind A · utility
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6Claims
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Key dates
| Filing date | Jun 14, 1996 |
| Grant date | Jul 22, 1997 |
| Priority date | — |
| Expiry date | Jun 14, 2016 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07D333/24
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Process for the preparation of derivatives having general formula (I) ##STR1## wherein the meaning of R will be defined in the text, characterized by the reaction between a compound having formula ##STR2## wherein X is an halogen, and an alkaline salt of a methyl dialkylmalonate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.