申请人:Honeywell International
公开号:US06548719B1
公开(公告)日:2003-04-15
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.
一种生产化学式为:CF3CY═CXnHp的氟代烯烃的方法,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是整数,独立地等于0、1或2,但要求(n+p)=2;包括在相转移催化剂的存在下,接触化合物CF3C(R1aR2b)C(R3cR4d),其中R1、R2、R3和R4独立地是氢原子或卤素,所述卤素选自氟、氯、溴和碘组成的群体,但要求R1、R2、R3和R4中至少有一个是卤素,在相邻的碳原子上至少有一个氢和一个卤素;a和b独立地等于0、1或2且(a+b)=2;c和d独立地等于0、1、2或3且(c+d)=3;以及至少一种碱金属氢氧化物。碱金属氢氧化物可以是例如钾或钠氢氧化物,相转移催化剂可以是例如至少一种:冠醚,例如18-冠-6和15-冠-5;或离子盐,例如季铵盐和季膦盐。该烯烃可用于例如生产其他工业化学品的中间体以及生产寡聚物和聚合物的单体。