Process for the production of indolyl lactic acid
US4190585A · kind A · utility
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14Claims
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Key dates
| Filing date | Sep 13, 1974 |
| Grant date | Feb 26, 1980 |
| Priority date | — |
| Expiry date | Sep 13, 1994 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07D209/18
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A process for the production of indolyl lactic acid which includes heating an aqueous solution of 2,3-dihydro-2,5-furan dicarboxylic acid to boiling. The aqueous solution is cooled and reacted with phenyl hydrazine or a salt of phenyl hydrazine. The resultant phenylhydrazone is converted by heating with sulfuric acid to indolyl lactic acid.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.