| 摘要 |
PROBLEM TO BE SOLVED: To obtain the subject bishexafluoroisopropyl carbonate in high selectivity and high yield useful for an organic solvent or solvent for a polymer by reacting hexafluoroisopropanol and triphosgene. SOLUTION: The subject compound expressed by the formula is obtained by reacting hexafluoroisopropanol and triphosgene in the presence of an amine (e.g. triethylamine). The addition amount of hexafluoroisopropanol to triphosgene is 1.0-2.0 equivalent. An addition of the amine is 6.0-9.0 mole per 1 mole of triphosgene at a dropping temperature of 2-20 deg.C and the dropping rate is preferably slow as possible. The reaction is preferably carried out in the presence of a solvent (e.g. diethyl ether).
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