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US 6,548,711 B2Granted
Process for producing 2-vinylcyclododecanone
AssigneeTakasago International Corporation
InventorsKenichi Yamamoto, Misao Yagi, Toshimitsu Hagiwara
Life of this patent
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Abstract
A process for producing 2-vinylcyclododecanone, the process comprising isomerizing 2-ethylidenecyclododecanone represented by the following formula (1): wherein the wavy line signifies that the double bond is a Z-isomer, an E-isomer or a mixture of an E-isomer and a Z-isomer; in the presence of a catalyst and separating 2-vinylcyclododecanone represented by the following formula (2) from the reaction product by fractionation:
Claims11
A process for producing 2-vinylcyclododecanone, the process comprising heating 2-ethylidenecyclododecanone represented by the following formula (1):
- wherein the wavy line signifies that the double bond is a Z-isomer, an E-isomer or a mixture of an E-isomer and a Z-isomer;
- in the presence of a catalyst to establish an isomeration equilibrium state between said Z-isomer, E-isomer and 2-vinylcyclodecanone represented by the following formula (2) and separating the 2-vinylcyclododecanone from the reaction product by fractionation:
Dependencies are inferred from the claim text.