Production of polychlorinated pyridine mixtures by liquid phase

Details Production of polychlorinated pyridine mixtures by liquid phase Production of polychlorinated pyridine mixtures by liquid phase

1983-04-22

1985-05-07

Jiles, Henry R.

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

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

C07D21361

Patent

active

045159530

ABSTRACT:
Preparation of high yields of mixtures rich in polychlorinated pyridines by maintaining a chlorine to pyridine weight ratio of greater than about 4:1 when reacting chlorine and pyridine or pyridine hydrochloride non-catalytically in the liquid phase at temperatures in excess of about 150.degree. C., the reactants being contained in a well mixed diluent producing 1 mole or less of hydrogen chlorine per mole of diluent by reaction with the chlorine in the indicated temperature range. Reaction in a primary reactor is followed by selective further chlorination to obtain desired final products useful as intermediates in the formation of herbicides and the like.

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