| 摘要 |
1. Process for the etherification of a phenol group in a compound of the general formula (I) : HO-Ar-(R)n in which : - Ar represents an aromatic radical consisting of a benzene ring or of several ortho-fused or ortho- and perifused benzene rings, - the substituents R, which are identical or different, represent a hydroxyl group, a linear or branched alkyl radical having from 1 to 6 carbon atoms, a linear or branched alkenyl radical having 2 to 6 carbon atoms, a phenyl radical, a cycloalkyl radical, a phenylalkyl radical in which the aliphatic chain contains 1 to 4 carbon atoms, a cycloalkyl-alkyl radical in which the aliphatic chain contains from 1 to 4 carbon atoms, a halogen atom, a nitro group, an amine group, an aldehyde group or a nitrile group, and - n is a number from 0 to 5, by reaction with an etherifying agent chosen from the group comprising alkyl carboxylates, the linear or branched alkyl radical having 1 to 6 carbon atoms, alkenyl carboxylates, the linear or branched alkenyl radical having 3 to 6 carbon atoms, and compounds capable of forming such carboxylates, characterised in that the reaction is carried out in the presence of a carboxylic acid salt chosen from amongst alkali metal, ammonium or alkaline earth metal carboxylates. |
