发明名称 |
A process for preparing fluoro-olefins |
摘要 |
A process for synthesizing an olefinic composition represented by the formula: CF2=CF(CF2CF2)nSO2F where n = 1 to 5 comprising (a) contacting CF2ClCFCl(CF2CF2)nI, wherein n = 1 to 5, with Na2S2O4 and NaHCO3 in a mixture of water and an aprotic polar solvent at a temperature in the range of room temperature to 110 DEG C, to form CF2ClCFCl(CF2CF2)nSO2Na; (b) contacting the said CF2ClCFCl(CF2CF2)nSO2Na with Cl2 in water or a mixture of water and an aprotic polar solvent at a temperature in the range of 0-200 DEG C to form CF2ClCFCl(CF2CF2)nSO2Cl; (c) contacting the said CF2ClCFCl(CF2CF2)nSO2Cl with a univalent metal fluoride in an anhydrous aprotic polar solvent to form CF2ClCFCl(CF2CF2)nSO2F; (d) contacting said CF2ClCFCl(CF2CF2)nSO2F with Zn in an alcohol or mixture of acetic acid and alcohol to form CF2=CF(CF2CF2)nSO2F; and, (e) separating the product. |
申请公布号 |
EP1479668(A1) |
申请公布日期 |
2004.11.24 |
申请号 |
EP20040075752 |
申请日期 |
1999.10.26 |
申请人 |
E.I. DUPONT DE NEMOURS AND COMPANY |
发明人 |
FARNHAM, WILLIAM BROWN;YANG, ZHEN-YU |
分类号 |
C07C303/22;C07C309/20;C07C309/81;C08F8/44;C08F210/02;C08F214/20;C08F214/22;C08F214/26;C08F214/28;C08F216/14;C08F228/02;H01B1/06;H01B1/12;H01G9/00;H01G9/155;H01M4/02;H01M4/131;H01M4/133;H01M4/48;H01M4/50;H01M4/52;H01M4/525;H01M4/58;H01M4/587;H01M4/62;H01M4/86;H01M6/18;H01M6/22;H01M8/10;H01M10/0525;H01M10/0565;H01M10/36 |
主分类号 |
C07C303/22 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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