Removal of ferric chloride from halopyridines

Details Removal of ferric chloride from halopyridines Removal of ferric chloride from halopyridines

1985-12-27

1987-03-10

Jiles, Henry R.

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

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

546346, 423493, C07D21160, C01G 300

Patent

active

046492011

ABSTRACT:
Ferric chloride is removed from mixtures with chlorinated and/or fluorinated pyridines and methylpyridines by extraction with diol solvents. For example, the ferric chloride in halopyridine mixtures containing 2,3,5,6-tetrachloropyridine was removed by extraction with ethylene glycol. The purified halopyridines are useful intermediates for the production of insecticides, herbicides, and fungicides.

REFERENCES:
patent: 3538100 (1970-11-01), Smith
patent: 4225718 (1980-09-01), Perettie et al.
patent: 4256894 (1981-03-01), Dietsche et al.
patent: 4542221 (1985-09-01), Jones
patent: 4546192 (1985-10-01), Fujioka et al.

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