Patent ID: 6462223
Filing Date: 2002-10-08
Classification: C07D

Abstract:
A process for producing dicarboxylic acid esters represented by the formula (5): wherein R1 and R4 are the same or different and each represents a hydrogen atom or a chain or cyclic aliphatic hydrocarbon group, which is unsubstituted or is substituted by halogen atoms, C1-4-alkyl groups, acyl groups, C6-10-arylcarbonyl groups, acyloxy groups, C6-10-arylcarbonyloxy groups, alkoxy, groups, alkoxycarbonyl groups, and aryloxy groups, or by an aromatic group, which comprises reactinga cyclic ester represented by the formula (1): wherein, R1, R2, and R3 are the same or different, R1 is as defined above and R2 and R3 each represents a hydrogen atom or a chain or cyclic aliphatic hydrocarbon group, which is unsubstituted or is substituted by halogen atoms, C1-4-alkyl groups, acyl groups, C6-10-arylcarbonyl groups, acyloxy groups, C6-10-arylcarbonyloxy groups, alkoxy groups, alkoxycarbonyl groups, and aryloxy groups, or by an aromatic group or R2 and R3 may bond together to form a ring,with an alcohol or water represented by the formula (4): R4â€”OHâ€ƒâ€ƒ(4) wherein R4 is as defined above.