INTEGRATED PROCESS FOR THE PRODUCTION OF Z-1,1,1,4,4,4-HEXAFLUORO-2-BUTENE
    2.
    发明公开
    INTEGRATED PROCESS FOR THE PRODUCTION OF Z-1,1,1,4,4,4-HEXAFLUORO-2-BUTENE 审中-公开
    综合征VERFAHREN ZUR HERSTELLUNG VON Z-1,1,1,4,4,4-HEXAFLUOR-2-BUTEN

    公开(公告)号:EP3102556A1

    公开(公告)日:2016-12-14

    申请号:EP15706590.5

    申请日:2015-02-06

    摘要: Disclosed is a process for the preparation of cis-1,1,1,4,4,4-hexafluoro-2-butene comprising contacting 1,1,1-trifluorotrichloroethane with hydrogen in the presence of a catalyst comprising ruthenium to produce a product mixture comprising 1316mxx, recovering said 1316mxx as a mixture of Z- and E-isomers, contacting said 1316mxx with hydrogen, in the presence of a catalyst selected from the group consisting of copper on carbon, nickel on carbon, copper and nickel on carbon and copper and palladium on carbon, to produce a second product mixture, comprising E- or Z-CFC-1326mxz, and subjecting said second product mixture to a separation step to provide E- or Z-1326mxz. The E- or Z-1326mxz can be dehydrochlorinated in an aqueous basic solution with an alkali metal hydroxide in the presence of a phase transfer catalyst to produce hexafluoro-2-butyne, which can then be selectively hydrogenated to produce Z-1,1,1,4,4,4-hexafluoro-2-butene using either Lindlar's catalyst, or a palladium catalyst further comprising a lantanide element or silver.

    摘要翻译: 公开了一种制备顺式-1,1,1,4,4,4-六氟-2-丁烯的方法,其包括在包含钌的催化剂存在下将1,1,1-三氟三氯乙烷与氢气接触以产生产物 混合物,其包含1316mxx,以Z和E异构体的混合物回收所述1316mxx,使所述1316mxx与氢接触,在选自碳上的碳,碳上的镍,碳上的铜和镍上的催化剂存在下,以及 铜和钯碳,以产生包含E-或Z-CFC-1326mxz的第二产物混合物,并使所述第二产物混合物进行分离步骤以提供E-或Z-1326mxz。 E-或Z-1326mxz可以在碱性金属氢氧化物的碱性水溶液中在相转移催化剂存在下脱氯化氢以产生六氟-2-丁炔,然后可以选择性氢化生成Z-1,1, 使用Lindlar催化剂的1,4,4,4-六氟-2-丁烯或进一步包含兰丹尼特元素或银的钯催化剂。