发明授权
US07157600B2 Process for preparing (per) fluorohalogenethers 有权
制备(全)氟卤醚的方法

Process for preparing (per) fluorohalogenethers
摘要:
A process for preparing (per)fluorohalogenethers containing the —SO2F group, having general formula (I): FSO2—R—CF2OCAF—CA′F2  (I) wherein: A and A′, equal to or different from each other, are Cl or Br; R has the following meanings: a (per)fluorinated, preferably perfluorinated, substituent, optionally containing one or more oxygen atoms; by reaction of carbonyl compounds having formula (II): FSO2—R—COF  (II) wherein R is as above; in liquid phase with elemental fluorine and with olefinic compounds having formula (III): CAF═CA′F  (III) wherein A and A′ are as above, operating at temperatures from −120° C. to −20° C., optionally in the presence of a solvent inert under the reaction conditions.
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