| 摘要 |
PROBLEM TO BE SOLVED: To obtain the subject compound by filtering an aqueous solution containing cis- and trans-cyclohexanedicarboxylic acid kept at an elevated temperature, and reacting the resultant trans-cyclohexanedicarboxylic acid with an alcohol. SOLUTION: This compound is obtained by filtering an aqueous solution containing cis- and trans-cyclohexanedicarboxylic acid kept at an elevated temperature, and reacting the resultant trans-cyclohexanedicarboxylic acid with alcohol. It is preferably obtained by hydrogenating terephthalic acid in water as the solvent in the presence of a palladium catalyst, separating the resultant reaction liquid from the catalyst, filtering the mixed solution of the cis and trans isomers (the trans compound preferably accounting for 30% or more of the total isomers) kept at an elevated temperature, to produce trans-1,4- cyclohexanedicarboxylic acid, esterifying the trans compound with an alcohol (preferably methyl alcohol). |
