Process for the preparation of esters or salts of aromatic or etheroaromatic acids
US4537970A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 12, 1983 |
| Grant date | Aug 27, 1985 |
| Priority date | — |
| Expiry date | Dec 12, 2003 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07D307/68
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
This invention relates to the preparation of esters or salts of aromatic or etheroaromatic acids having formula Y--Ar--CO--OR (I), where: PA0 Ar represents an aromatic group constituted by one or more benzene rings, optionally condensed, or an etheroaromatic nucleus optionally condensed with one or more benzene rings; PA0 Y represents from zero to more substituents, equal or different, chosen among a halogen; an alkyl group having up to 6 carbon atoms; an alkoxy group having up to 5 carbon atoms; an ester group --COOR', where R' contains up to 5 carbon atoms; a hydroxyl group; a phenyloxy group, optionally substituted with groups inert under reaction conditions; a trifluoromethyl group; a nitrile group; an amidic group (--CONH.sub.2); an acetamidic group (--NH--CO--CH.sub.3); or an acyl group --CO--R", where R" represents a hydrocarbon group having up to 8 carbon atoms; PA0 R represents an alkyl group R.sub.1 having up to 5 carbon atoms or an alkali metal or alkaline earth metal M. These esters and salts (I) are obtained by reaction of a halide Y--Ar--X (II), where Ar and Y have the hereinabove defined meanings, while X is Cl, Br or I, with carbon monoxide, in an alcoholic solvent …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.