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• 20601-38-1 4,4′-dihydroxybicyclohexyl 

Relevant academic research and scientific papers

Method for producing cyclic olefin compound

Provided is a method for producing a cyclic olefin compound that makes it possible to suppress isomerization reactions and other such secondary reactions, and to efficiently obtain a high-purity cyclic olefin compound containing few impurities easily and at a high yield. In the method for producing a cyclic olefin compound of the present invention, a cyclic olefin compound having two or more cyclohexene rings in the molecule is produced by intramolecular dehydration of an alicyclic alcohol having two or more hydroxyl-group-bonded cyclohexane rings in the molecule in the presence of a dehydration catalyst, wherein the method is characterized in that a dehydration reaction is carried out while supplying the dehydration catalyst continuously or intermittently to a mixed solution containing the alicyclic alcohol and an organic solvent under reflux of an organic solvent that is azeotropic with water and separates from water at ordinary temperatures, or, when the dehydration catalyst is configured from multiple components, while supplying at least one of these components continuously or intermittently to a mixed solution containing the alicyclic alcohol and an organic solvent.

PROCESS FOR PRODUCTION OF CYCLIC OLEFINS

Disclosed is a method for producing a cyclic olefin compound having two or more cyclohexene rings per molecule via intramolecular dehydration of an alicyclic alcohol having two or more hydroxylated cyclohexane rings per molecule. The method includes the step (i) of heating the alicyclic alcohol at a temperature of 130°C to 230°C and a pressure greater than 20 Torr in an organic solvent in the presence of a dehydration catalyst, to carry out dehydration of the alicyclic alcohol while distilling off by-product water, which dehydration catalyst is liquid or soluble in a liquid reaction mixture under the reaction conditions; and the subsequent step (ii) of heating the resulting reaction mixture at a temperature of 50°C to 220°C and a pressure of 200 Torr or less to recover the cyclic olefin compound as a distillate. According to the method, side reactions such as isomerization are suppressed, and high-purity cyclic olefin compounds with less impurities can be simply and efficiently obtained in high yields.