Process for preparing carboxylic acid esters of dicyclopentadienes

摘要

A process for preparing a carboxylic acid ester of a dicyclopentadiene by reacting the dicyclopentadiene with carbon monoxide and an alcohol in the presence of a cobalt compound catalyst, characterized by carrying out said reaction in the presence of 0.5 mole or more of a pyridine base per mole of the dicyclopentadiene at a temperature of 130 DEG C. or less at a carbon monoxide pressure of preferably at least 20 kg/cm2. G to hydroesterify the double bond in the norbornene ring, thereby forming a mono-carboxylate of a dicyclopentadiene, and hydroesterifying the monoesterification product as produced or the isolated monoester to the same reaction conditions as above except that the temperature is 160 DEG C. or less to hydroesterify the remaining double bond of the monoester, thereby forming a dicarboxylate of dicyclopentadiene.