Patent ID: 6444843
Filing Date: 2002-09-03
Classification: C07C

Abstract:
A method for producing (hydroxyalkyl) alicyclic carboxylic acids, comprising the steps of:(i) producing (acyloxyalkyl) alicyclic carboxylic acids by hydrogenation of an aromatic ring of (acyloxyalkyl) aromatic carboxylic acids; and (ii) subjecting the (acyloxyalkyl) alicyclic carboxylic acids obtained in said step (i) to hydrolysis wherein the (acyloxyalkyl) alicyclic carboxylic acids have a structure represented by the following Formula (2) R6COOâ€”CR1R2â€”Zâ€”COOHâ€ƒâ€ƒ(2) where Z is an alicyclic compound group of two or greater valency having six or more carbon atoms, R1 is a hydrogen atom or alkyl group having a carbon number of 1 to 3, R2 is a hydrogen atom, or alkyl group having a carbon number of 1 to 3, or â€”OCOR1 group, R5 is an alkyl group having a carbon number of 1 to 4, and R6 is an alkyl group having a carbon number of 1 to 6, alkenyl group having a carbon number of 1 to 6, alkynyl group having a carbon number of 1 to 6, or a benzene ring, which may or may not include a substituent, wherein the (acyloxyalkyl) aromatic carboxylic acids have the following Formula (3) R6COOâ€”CR1R2â€”Arâ€”COOHâ€ƒâ€ƒ(3) where Ar is an aromatic ring of two or greater valency, R1 is a hydrogen atom or alkyl group having a carbon number of 1 to 3, R2 is a hydrogen atom, alkyl group having a carbon number of 1 to 3, or â€”OCOR5 group, R5 is an alkyl group having a carbon number of 1 to 4, and R6 is an alkyl group having a carbon number of 1 to 6, alkenyl group having a carbon number of 1 to 6, alkynyl group having a carbon number of 1 to 6, or a benzene ring, which may or may not include a substituent, and wherein the (hydroxyalkyl) alicyclic carboxylic acids have a structure represented by the following Formula (5) HOâ€”CR1R2â€”Zâ€”COOHâ€ƒâ€ƒ(5) where Z is an alicyclic compound group of two or greater valency having six or more carbon atoms, R1 is a hydrogen atom or alkyl group having a carbon number of 1 to 3, R2 is a hydrogen atom, alkyl group having a carbon number of 1 to 3, or â€”OCOR5 group, and R5 is an alkyl group having carbon number of 1 to 4.