发明授权
US08044252B2 Catalytic isomerization between E and Z isomers of 1,2,3,3,3-pentafluoropropene
失效
1,2,3,3,3-五氟丙烯的E和Z异构体之间的催化异构化
- 专利标题： Catalytic isomerization between E and Z isomers of 1,2,3,3,3-pentafluoropropene
- 专利标题（中）： 1,2,3,3,3-五氟丙烯的E和Z异构体之间的催化异构化
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申请号： US12373588申请日： 2007-07-11
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公开(公告)号： US08044252B2公开(公告)日： 2011-10-25
- 发明人: Mario Joseph Nappa , Donald J. Toton , Velliyur Nott Mallikarjuna Rao
- 申请人： Mario Joseph Nappa , Donald J. Toton , Velliyur Nott Mallikarjuna Rao
- 申请人地址： US DE Wilmington
- 专利权人： E.I. du Pont de Nemours and Company
- 当前专利权人： E.I. du Pont de Nemours and Company
- 当前专利权人地址： US DE Wilmington
- 国际申请： PCT/US2007/015752 WO 20070711
- 国际公布： WO2008/008351 WO 20080117
- 主分类号： C07C17/00
- IPC分类号： C07C17/00
摘要：
A process is disclosed to increase the Z/E ratio of 1,2,3,3,3-pentafluoropropene. The process involves contacting a starting material comprising 1,2,3,3,3-pentafluoropropene with a catalyst on AlF3 or carbon, wherein the catalyst is selected from the group consisting of SbClwF5-w, TiClxF4-x, SnClyF4-y and TaCl2F5-z wherein w is from 0 to 4, x is from 0 to 3, y is from 0 to 3, z is from 0 to 4, to obtain a product wherein the Z/E ratio of 1,2,3,3,3-pentafluoropropene is increased relative to the Z/E ratio of 1,2,3,3,3-pentafluoropropene in the starting material.A process is also disclosed to decrease the Z/E ratio of 1,2,3,3,3-pentafluoropropene. The process involves contacting a starting material comprising 1,2,3,3,3-pentafluoropropene with a catalyst on AlF3 or carbon, wherein the catalyst is selected from the group consisting of SbClwF5-w, TiClxF4-x, SnClyF4-y and TaClzF5-z wherein w is from 0 to 4, x is from 0 to 3, y is from 0 to 3, z is from 0 to 4, to obtain a product wherein the Z/E ratio of 1,2,3,3,3-pentafluoropropene is decreased relative to the Z/E ratio of 1,2,3,3,3-pentafluoropropene in the starting material.
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