Preparation process of dicarboxylic acid compounds
申请人:Adchemco Corporation
公开号:EP1215192A3
公开(公告)日:2003-02-12
Carboxylic acid compounds, each of which has an indene skeleton and represented by the following formula (2) or a fluorene skeleton and represented by the following formula (3), are each prepared by reacting an unsaturated carboxylic acid compound represented by the following formula (1) with indene or fluorene in the presence of a strong base catalyst: wherein R1, R2, R3 and R4 each independently represents an atom or group selected from a hydrogen atom, an alkyl group, an aryl group or a carboxyl group, with the proviso that at least one of R3 and R4 contains a carboxyl group or a salt thereof or a carboxylic ester group.