Patent ID: 6600064
Filing Date: 2003-07-29
Classification: C07C

Abstract:
A process for the preparation of hydroxybenzoic benzyl esters of the formula in whichR1 to R5 are identical or different and are C1-C6-alkyl, C1-C6-alkoxy-, C1-C6-halogenoalkyl, C1-C6-halogenoalkoxy-, CN, CO(C1-C6-alkyl), NO2, or halogen, comprising reacting a dibenzyl ether of the formula in whichR1, R2, and R3 are as defined above, or a mixture of such dibenzyl ether and a benzyl alcohol of the formula in whichR1, R2, and R3 are as defined above, with an alkylcarbonyloxybenzoic or alkoxycarbonyloxybenzoic acid of the formula in whichR4 and R5 are as defined above and R6 is hydrogen or a straight-chain or branched, saturated or unsaturated, optionally halogen-substituted alkyl, aralkyl, aryl, alkoxy, aralkoxy, or aryloxy group having 1 to 50 carbon atoms, in the presence of one or more acids as catalyst.