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公开(公告)号:US5877360A
公开(公告)日:1999-03-02
申请号:US352448
申请日:1994-12-09
申请人: Geoffrey James Moore , Jenny O'Kell
发明人: Geoffrey James Moore , Jenny O'Kell
CPC分类号: C07C17/23 , C07C17/389 , Y02P20/582
摘要: A process for the production of difluoromethane which comprises reacting a compound of formula XYCF.sub.2 wherein X and Y are each H, Cl or Br but at least one of X and Y is an atom other than hydrogen, and in particular chlorodifluoromethane, with hydrogen at elevated temperature in the presence of a hydrogenation catalyst, in particular a catalyst comprising palladium carried on an active carbon support.
摘要翻译: 一种生产二氟甲烷的方法,其包括使式XYCF2化合物,其中X和Y各自为H,Cl或Br,但X和Y中的至少一个是除氢以外的原子,特别是氯二氟甲烷,在升高的氢气 在加氢催化剂存在下的温度,特别是包含负载在活性炭载体上的钯的催化剂。
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公开(公告)号:US4052405A
公开(公告)日:1977-10-04
申请号:US357656
申请日:1973-05-07
IPC分类号: C07D213/22
CPC分类号: C07D213/22
摘要: A 1,1'-dialkyl-4,4'-bipyridylium salt is prepared from the corresponding 4,4'-bipyridyl using an alkylsulphate salt as the quaternizing agent.
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公开(公告)号:US5744660A
公开(公告)日:1998-04-28
申请号:US576049
申请日:1995-12-21
申请人: Lisa Bradley , Leslie Burgess , Richard Llewellwyn Powell , Geoffrey James Moore , Paul Nicholas Ewing , Kenneth Taylor
发明人: Lisa Bradley , Leslie Burgess , Richard Llewellwyn Powell , Geoffrey James Moore , Paul Nicholas Ewing , Kenneth Taylor
IPC分类号: C07C17/20 , C07C17/358 , C07C19/08 , C07C17/08
CPC分类号: C07C19/08 , C07C17/206 , C07C17/358
摘要: This invention relates to a process for the production of 1,1,2,2- and/or 1,1,1,2-tetrafluoroethanes, and in particular to a process for the production of 1,1,1,2-tetrafluoroethane.
摘要翻译: 本发明涉及一种生产1,1,2,2-和/或1,1,1,2-四氟乙烷的方法,特别涉及生产1,1,1,2-四氟乙烷的方法 。
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公开(公告)号:US3946023A
公开(公告)日:1976-03-23
申请号:US557258
申请日:1975-03-11
IPC分类号: C07D213/74
摘要: A 1,1'-dialkyl-4,4'-bipyridylium salt is prepared by reacting the corresponding 4,4'-bipyridyl with a diloweralkylsulphate in the presence of a mineral acid.
摘要翻译: 1,1'-二烷基-4,4'-联吡啶鎓盐是通过在无机酸存在下使相应的4,4'-联吡啶与二烷基硫酸盐反应来制备的。
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