Patent ID: 7918987

Claim:
A process to prepare a halogenated carbonyl group-containing compound, the process comprising: electrochemically reacting a corresponding carbonyl group-containing compound further containing an α-carbon hydrogen atom with a di- and/or higher halogenated carbonyl group-containing compound, optionally a hydrogen halide H—X, an organic halide R′—X and/or a halide salt M n+ —X n − under substantially water-free conditions, wherein X is a chlorine, bromine or iodine atom, R′ is an alkyl or aryl group that may be linear or branched, optionally containing one or more heteroatoms of which the halogen atom X can be electrochemically split off, M n+ is a quaternary ammonium, alkaline earth metal, alkali metal or metal cation, and n is an integer of 1 to 5, depending on the valency of the metal cation M n+ .