{
  "$type": "site.standard.document",
  "coverImage": {
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  "description": "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…",
  "path": "/patents/1082303",
  "publishedAt": "2004-11-24T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "C07C309/20",
    "DU PONT [US]"
  ],
  "textContent": "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.",
  "title": "A process for preparing fluoro-olefins"
}