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公开(公告)号:US06639118B1
公开(公告)日:2003-10-28
申请号:US10269301
申请日:2002-10-11
IPC分类号: C07C20908
CPC分类号: C07C209/08 , C07C5/2786 , C07C17/08 , C07C2527/08 , C07C11/02 , C07C19/075 , C07C211/03
摘要: Process technology for selectively isomerizing vinylidene olefin to tri-substituted olefin is described. The vinylidene olefin, normally in admixture with other types of olefins, especially linear 1-olefins, is treated with anhydrous hydrogen bromide under anhydrous conditions and in the absence of molecular oxygen and free radical initiator. The contacting period, which can be a matter of minutes, is sufficient to selectively isomerize the vinylidene olefin to tri-substituted olefin. If the process is conducted properly, little if any hydrobromination occurs.
摘要翻译: 描述了将偏二氟烯烃选择性异构化为三取代的烯烃的工艺技术。 通常与其他类型的烯烃,特别是线性1-烯烃混合的亚乙烯基烯烃在无水条件下和在不存在分子氧和自由基引发剂的情况下用无水溴化氢处理。 接触时间可能是几分钟,足以将亚乙烯基烯烃选择性异构化为三取代的烯烃。 如果过程正确进行,几乎不会发生氢溴酸化。