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    • 3. 发明授权
    • Process and apparatus for production of 5-cyclohexadecen-1-one
    • 5-环十五碳烯-1-酮的制备方法和装置
    • US06169211A
    • 2001-01-02
    • US09304256
    • 1999-05-06
    • Misao YagiKeisuke ItakuraKenichi YamamotoAkira Amano
    • Misao YagiKeisuke ItakuraKenichi YamamotoAkira Amano
    • C07C49547
    • C07C49/587C07C45/512Y02P20/582
    • Disclosed is a process for producing 5-cyclohexadecen-1-one continuously from 1,2-divinylcyclododecanol in a short time in an efficient manner without side reactions. In the process, 1,2-divinylcyclododecanol as a starting material is supplied from a raw material container 1 by a dosage pump 2 to a flash unit 3 which is set under a vacuum of 5 mm Hg or less by a vacuum pump 8 and is heated. 1,2-Divinylcyclododecanol which is flashed in the flash unit is supplied to a reactor 4 which is heated to 400 to 650° C. and is set under a vacuum of 5 mm Hg or less whereby 1,2-divinylcyclododecanol is converted into 5-cyclohexadecen-1-one. The reaction product is discharged from the top of the reactor and is cooled to recover the objective 5-cyclohexadecen-1-one in the recovery container 6. The reduction in the pressure of the apparatus is preferably performed by a vacuum pump 8 via a hydrochloric acid trap 7 comprising, for example, sodium methylate/methanol cooled to −78 to −100° C.
    • 公开了一种在短时间内以有效的方式从1,2-二乙烯基环十二烷连续生产5-十二碳烯-1-酮的方法,无副反应。 在此过程中,作为起始原料的1,2-二乙烯基环十二烷由原料容器1通过剂量泵2供给到通过真空泵8设置在5mmHg以下的真空下的闪光单元3,并且是 加热。 在闪光单元中闪蒸的1,2-二乙烯基环十二烷醇被供给到反应器4中,该反应器4被加热到400-650℃,并设置在5mmHg以下的真空中,由此将1,2-二乙烯基环十二烷转化成5 - 环十六碳烯-1-酮。 将反应产物从反应器的顶部排出并冷却以在回收容器6中回收目标5-环十二碳烯-1-酮。装置的压力降低优选通过真空泵8通过盐酸 酸阱3,其包含例如甲醇钠/甲醇,冷却至-78℃至-100℃。