Process for the preparation of perfluoroacyl fluorides

Details Process for the preparation of perfluoroacyl fluorides Process for the preparation of perfluoroacyl fluorides

C - Chemistry, Metallurgy

07

C

260/539.7

C07C 51/58 (2006.01) C07C 53/50 (2006.01)

Patent

CA 1303062

ABSTRACT OF THE DISCLOSURE: Process for the preparation of a perfluoroacyl fluoride wherein the acyl radical is a propionyl or butyryl group, characterized in that perfluoroalkylvinylether wherein the alkyl radical is a methyl or ethyl group is thermally treated in the presence of a catalyst selected from the group consisting of: A) a fluoride of Li, Na, K, Cs or Rb, or another compound of Li, Na, K, Cs or Rb which can easily been fluorinated under the reaction conditions; B) a fluoride of Be, Mg, Ca, Sr or Ba, or another compound of Be, Mg, Ca, Sr or Ba which is easily fluorinatable under the reaction conditions; C) a fluoroaluminate, fluorosilicate, fluoroti- tanate or fluorometallate or an alkali metal, or of a metal belonging to group IIA of the Periodic Table, i.e. compounds consisting of a fluorine, alkali metal and a transition metal or a compound which is easily fluorinatable to yield one of the above-said fluoroaluminates, fluorosilicates, fluorotitanates of fluorometallates under the reaction conditions; D) a fluoride of a metal of the first transition series, or the corresponding metal, or another compound of such a metal which is easily fluorinatable under the reaction conditions; E) a fluoride of a lathanide or the corresponding metal, or another compound of such a metal which is easily fluorinatable under the reaction conditions; and F) an oxyfluoride of Si, Al, Ti, Ge, Sn or Pb, or another compound of Si, Al, Ti, Ge, Sn or Pb which is easily fluorinatable to yield one of the above-said oxyfluorides under the reaction conditions.

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