Antioxidant ester substituted phenols and process for their preparation

Claim 1

A process comprising (a) reacting in an inert atmosphere a compound having the general structural formula ##STR9## with a compound having the general formula ##STR10## in the presence of a basic catalyst while dissolved in an organic solvent to yield an aldehyde having the structural formula ##STR11## (b) separating and reducing the aldehyde to form an alcohol having the general structural formula ##STR12## (c) separating the alcohol and reacting it with an ester forming compound selected from the group consisting of methyl acrylate, methyl methacrylate, ethyl acrylate and a compound of the general formula ##STR13## while in the presence of a transesterification catalyst to yield (d) an ester with the structural formula ##STR14## wherein R 1 and R 2 are the same or different radicals selected from the group consisting of tertiary alkyl radicals having from 4 to 12 carbon atoms, R 3 is selected from the group consisting of hydrogen, methyl and ethyl, A is selected from the group consisting of chloro and bromo, R 4 and R 5 are the same or different radicals selected from the group consisting of methyl, ethyl, n-propyl and n-butyl and R 6 is selected from the group consisting of methyl, ethyl, propyl and butyl, aralkyl radicals having from 7 to 12 carbon atoms, vinyl, 2-propenyl and aryl radicals having the general formula ##STR15## wherein X is selected from the group consisting of hydrogen, amino, nitro, chloro, bromo and alkyl radicals having from 1 to 17 carbon atoms and wherein R 7 is an alkyl radical having from 1 to 10 carbon atoms.