FC(F)(C)C(F)(F)C(F)(F)O.[C:12]([CH:16]([C:18]([CH2:21][OH:22])([F:20])[F:19])[F:17])([F:15])([F:14])[F:13].C(=O)([O-])[O-].[K+].[K+].[C:29]([O:33][C:34](=[C:36]([F:38])[F:37])[F:35])([F:32])([F:31])[F:30]>C(#N)C>[C:12]([CH:16]([C:18]([CH2:21][O:22][C:36]([CH:34]([O:33][C:29]([F:32])([F:31])[F:30])[F:35])([F:38])[F:37])([F:20])[F:19])[F:17])([F:15])([F:14])[F:13]Hexafluorobutanol, CF3CFHCF2CH2OH (65.3 g, 0.34 mol), prepared essentially as described in Example 2) was combined with potassium carbonate (9.9 g, 0.072 mol) and 133 g of acetonitrile in a 600 mL Parr reactor. The temperature of the reactor was raised to 45° C. and CF3OCF═CF2 (65.6 g, 0.39 mol) added as a gas over about two hours. The resulting reaction mixture was stirred for about 18 hours at 45° C. The reactor was cooled and the contents of the reactor filtered to remove the potassium carbonate. The resulting product-containing filtrate was distilled using a concentric tube column, with the product cut boiling at 115-119° C. The product structure was confirmed by GCMS.
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