A process for producing 2-vinylcyclododecanone, the process comprising isomerizing 2-ethylidenecyclododecanone represented by the following formula (1):
wherein the wave line shows 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:
2-Vinylcyclododecanone can be produced using 2-ethylidenecyclododecanone, which can be manufactured simply from cyclododecanone in a high yield through no chlorination, without using any solvent having safety problems in a high yield by using a simple process involving neither washing nor solvent recovery.
一种生产 2-
乙烯基环十二酮的工艺,该工艺包括将下式(1)代表的 2-亚乙基
环十二酮异构化:
其中波浪线表示双键是 Z-异构体、E-异构体或 E-异构体和 Z-异构体的混合物;在催化剂存在下,通过分馏从反应产物中分离出下式(2)代表的 2-
乙烯基环十二酮:
可以使用 2-亚乙基
环十二酮生产 2-
乙烯基环十二酮,这种
环十二酮可以简单地从环 十二酮中生产出来,无需
氯化,不使用任何有安全问题的溶剂,采用简单的工艺,既不 涉及洗涤,也不涉及溶剂回收,产量很高。