Removal of ferric chloride from halopyridines

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

C - Chemistry, Metallurgy

07

D

260/295.2

C07D 213/61 (2006.01)

Patent

CA 1264756

ABSTRACT Ferric chloride is removed from mixtures with chlorinated and/or fluorinated pyridines and methyl- pyridines 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.

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