公开(公告)号：EP0974571A2

公开(公告)日：2000-01-26

申请号：EP99305781.9

申请日：1999-07-21

Applicant: ELF ATOCHEM NORTH AMERICA, INC.

Inventor： Elsheikh, Maher Yousef ,  Fellenger, Paul David

IPC: C07C17/25

CPC classification number: C07C17/25 ,  C07C21/18

Abstract: Disclosed is a process for the preparation of cis/trans 1,1,1,3-tetrafluoro-2-propene (1234 ze) which comprises (a) contacting 1,1,1,3,3-pentafluoropropane (245fa) with an alkaline solution, preferably an aqueous or alcoholic solution of a base such as KOH, NaOH, Ca(OH) 2 or Mg(OH) 2 , or with a chromium-based catalyst, such as fluorided Cr 2 O 3 or fluorided Cr/Ni/Alf 3 , and (b) recovering cis/trans 1,1,1,3-tetrafluoro-2-propene from the reaction mixture.

Abstract translation: 公开了一种制备顺式/反式1,1,1,3-四氟-2-丙烯（1234 ze）的方法，其包括（a）使1,1,1,3,3-五氟丙烷（245fa）与 碱性溶液，优选碱如KOH，NaOH，Ca（OH）2或Mg（OH）2的水溶液或醇溶液，或与铬基催化剂如氟化Cr 2 O 3或氟化Cr / Ni / Alf 3， 和（b）从反应混合物中回收顺/反1,1,1,3-四氟-2-丙烯。

公开(公告)号：EP0974571A3

公开(公告)日：2000-04-12

申请号：EP99305781.9

申请日：1999-07-21

Applicant: ELF ATOCHEM NORTH AMERICA, INC.

Inventor： Elsheikh, Maher Yousef ,  Fellenger, Paul David

IPC: C07C17/25

CPC classification number: C07C17/25 ,  C07C21/18

Abstract: Disclosed is a process for the preparation of cis/trans 1,1,1,3-tetrafluoro-2-propene (1234 ze) which comprises (a) contacting 1,1,1,3,3-pentafluoropropane (245fa) with an alkaline solution, preferably an aqueous or alcoholic solution of a base such as KOH, NaOH, Ca(OH) 2 or Mg(OH) 2 , or with a chromium-based catalyst, such as fluorided Cr 2 O 3 or fluorided Cr/Ni/Alf 3 , and (b) recovering cis/trans 1,1,1,3-tetrafluoro-2-propene from the reaction mixture.

Abstract translation: 本发明公开了制备顺式/反式1,1,1,3-四氟-2-丙烯（1234ze）的方法，该方法包括（a）使1,1,1,3,3-五氟丙烷（245fa）与 碱性溶液，优选碱如KOH，NaOH，Ca（OH）2或Mg（OH）2的水溶液或醇溶液，或与铬基催化剂如氟化Cr2O3或氟化Cr / Ni / 和（b）从反应混合物中回收顺式/反式1,1,1,3-四氟-2-丙烯。