Patent ID: 6998506

Claim:
A process for preparing acylfluorides by reaction of carbonyl fluoride COF 2 with a compound having general formula: T=CR 1 R 2 (I) wherein: T is O or CF 2 R 1 and R 2 , equal or different, are F or a R(O) t radical, with the proviso that: when T=CF 2 , then: R=linear or branched C 1 –C 7 (per)fluoroalkyl, optionally containing one or more oxygen atoms, t is an integer equal to zero or 1; when T is oxygen, then: R 1 and R 2 are equal to each other and have the meaning of R=C 1 –C 7 (per) fluoroalkyl, optionally containing one or more oxygen atoms, with t=0; wherein a catalyst supported on porous compound is used, the catalyst being selected from: CsF, RbF, KF, AgF, each optionally in admixture with one or more of the others, wherein the porous compound is formed by a compound inert under the reaction conditions and has a porosity, determined by the mercury-helium method, and expressed as ratio between the pore volume and the total solid volume, higher than 0.2, wherein said process is conducted in the presence of a solvent.