Carboxytetralinephosphonic acids and process for making them
US4692281A · kind A · utility
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Key dates
| Filing date | May 2, 1986 |
| Grant date | Sep 8, 1987 |
| Priority date | — |
| Expiry date | May 2, 2006 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07F9/383
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Novel mono- or dicarboxytetralinephosphonic acids of the general formula I ##STR1## in which R stands for hydrogen or an alkyl group, PA1 X stands for hydrogen or a carboxylic group, and PA1 Y stands for hydrogen or an alkyl group are made by reacting 1-phenylvinyl-1-phosphonic acid with an unsaturated carboxylic acid of formula II ##STR2## or with its anhydride.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.