利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

29 条记录 (耗时 0.03 秒)

    Process for producing fluoroolefins
    8.
    发明授权
    Process for producing fluoroolefins 有权
    制备氟烯烃的方法

    公开(公告)号：US06548719B1

    公开(公告)日：2003-04-15

    申请号：US09962974

    申请日：2001-09-25

    申请人： Haridasan K. Nair ,  Michael Van Der Puy ,  David Nalewajek ,  Timothy R. Demmin ,  Andrew J. Poss ,  David E. Bradley ,  Ian R. Shankland

    发明人： Haridasan K. Nair ,  Michael Van Der Puy ,  David Nalewajek ,  Timothy R. Demmin ,  Andrew J. Poss ,  David E. Bradley ,  Ian R. Shankland

    IPC分类号： C07C1725

    CPC分类号： C07C17/04 ,  C07C17/25 ,  C07C19/14 ,  C07C21/18

    摘要： A process for producing a fluoroolefin of the formula: CF3CY═CXnHp wherein Y is a hydrogen atom or a halogen atom (i.e., fluorine, chlorine, bromine or iodine); X is a hydrogen atom or a halogen atom (i.e., fluorine, chlorine, bromine or iodine); n and p are integers independently equal to 0, 1 or 2, provided that (n+p)=2; comprising contacting, in the presence of a phase transfer catalyst, a compound of the formula: CF3C(R1aR2b)C(R3cR4d), wherein R1, R2, R3, and R4 are independently a hydrogen atom or a halogen selected from the group consisting of fluorine, chlorine, bromine and iodine, provided that at least one of R1, R2, R3, and R4 is halogen and there is at least one hydrogen and one halogen on adjacent carbon atoms; a and b are independently=0, 1 or 2 and (a+b)=2; and c and d are independently=0, 1, 2 or 3 and (c+d)=3; and at least one alkali metal hydroxide. The alkali metal hydroxide can be, for example, potassium or sodium hydroxide and the phase transfer catalyst can be, for example, at least one: crown ether such as 18-crown-6 and 15-crown-5; or onium salt such as, quaternary phosphonium salt and quaternary ammonium salt. The olef in is useful, for example, as an intermediate for producing other industrial chemicals and as a monomer for producing oligomers and polymers.

    摘要翻译： 制备下式的氟代烯烃的方法：CF 3 CY = CXnHp其中Y是氢原子或卤素原子（即氟，氯，溴或碘）; X是氢原子或卤素原子（即氟，氯，溴或碘）; n和p是独立地等于0,1或2的整数，条件是（n + p）= 2; 包括在相转移催化剂存在下使下式化合物：其中R 1，R 2，R 3和R 4独立地为氢原子或选自以下的卤素：式中：CF 3 C（R 1a R 2b）C（R 3 c R 4d） 氟，氯，溴和碘，条件是R 1，R 2，R 3和R 4中的至少一个是卤素，并且在相邻碳原子上具有至少一个氢和一个卤素; a和b独立地为0,1或2，（a + b）= 2; 且c和d独立地为0,1,2或3和（c + d）= 3; 和至少一种碱金属氢氧化物。 碱金属氢氧化物可以是例如氢氧化钾或氢氧化钠，相转移催化剂可以是例如至少一种：冠醚如18-冠-6和15-冠-5; 或鎓盐如季鏻盐和季铵盐。 烯烃可用作例如生产其它工业化学品的中间体，以及用作生产低聚物和聚合物的单体。