Process for producing trifluoromethylpyridines

Details Process for producing trifluoromethylpyridines Process for producing trifluoromethylpyridines

1981-06-04

1986-01-07

Jiles, Henry R.

Organic compounds -- part of the class 532-570 series

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

546346, 570194, 570195, 570196, C07D21172

Patent

active

045635293

ABSTRACT:
A trifluoromethylpyridine selected from the group consisting of .alpha.-trifluoromethylpyridine, .gamma.-trifluoromethylpyridine, a bis(trifluoromethyl)pyridine and chlorides thereof which have 1 to 3 chlorine atoms in its pyridine nucleus is produced by reacting a pyridine derivative selected from the group consisting of .alpha.-picoline, .gamma.-picoline and a lutidine with chlorine and anhydrous hydrogen fluoride at a temperature of 300.degree. to 600.degree. C. in a vapor phase in the presence of a diluent and a catalyst comprising a fluoride of a metallic element selected from the group consisting of aluminum, chromium, iron, nickel, manganese, cobalt and copper.

REFERENCES:
patent: 2516402 (1950-07-01), McBee et al.
patent: 3787420 (1974-01-01), Torba
patent: 4288599 (1981-09-01), Nishiyama et al.
W.O. Publication No. 79/00094, publication on Mar. 8, 1979.

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