Process for producing 2,3,5,6-tetrachloropyridine

Details Process for producing 2,3,5,6-tetrachloropyridine Process for producing 2,3,5,6-tetrachloropyridine

1986-09-19

1987-10-27

Rotman, Alan L.

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

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

C07D21316

Patent

active

047031239

ABSTRACT:
In accordance with the present invention, 2,3,5,6-tetrachloropyridine is advantageously prepared by contacting pentachloropyridine in a solvent selected from the group consisting of alkylnitriles, water, alkylsulfoxides, tetramethylsulfone, C-1 to C-5 alcohols, alkyl carbonates and mixtures thereof, in the presence of an ammonium salt of an organic or inorganic acid with about 0.7 to about 1.1 g atoms of zinc per mole of pentachloropyridine.

REFERENCES:
patent: 3993654 (1976-11-01), Dean et al.
patent: 4133675 (1979-01-01), Schurter et al.
patent: 4259495 (1981-03-01), Weis
Sutter et al., Chem. Abstracts, vol. 93, (9), abst. No. 93:95, 104, Sept. 1, 1980.
Weis, Chem. Abstracts, vol. 95, (3), abst. No. 95:24, 837r, Jul. 20, 1981.

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