Process for the preparation of substituted acetic acids
US5374724A · kind A · utility
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1Claims
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Key dates
| Filing date | Nov 2, 1992 |
| Grant date | Dec 20, 1994 |
| Priority date | — |
| Expiry date | Nov 2, 2012 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09B57/00
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A process for the preparation of a substituted acetic acid of the Formula (2): ##STR1## wherein --X--Z is an optionally substituted aromatic or heteroaromatic optionally substituted amino radical; by reacting a compound of the Formula (7): EQU Z--Y--H Formula 7 with glyoxylic acid. The compounds of Formula (2) are useful as intermediates in the preparation of polycyclic dyes.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.