Process for the preparation of fluorobenzenes

Details Process for the preparation of fluorobenzenes Process for the preparation of fluorobenzenes

C - Chemistry, Metallurgy

07

C

C07C 25/13 (2006.01) C07C 17/361 (2006.01) C07C 37/62 (2006.01) C07C 39/27 (2006.01) C07C 41/22 (2006.01) C07C 43/225 (2006.01) C07C 201/12 (2006.01) C07C 205/12 (2006.01)

Patent

CA 2070412

2070412 9106518 PCTABS00005 Described is a method of preparation of fluorobenzenes with at least one hydrogen atom substituted on the ring and, optionally, other substituents which, independently of each other, can be chlorine, bromine, nitro, hydroxy, C1-C3 alkoxy or C1-C3 alkyl, the number of nitro groups being not more than 2 and the number of hydroxy and alkoxy groups being not more than 3. Preparation is by heating the appropriate benzaldehyde, substituted with at least one fluorine atom, in the presence of a catalyst, and is characterized by the fact that the reaction product is separated directly from the reaction zone.

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