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

1983-04-19

1985-03-26

Jiles, Henry R.

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

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

C07D21361

Patent

active

045074860

ABSTRACT:
Preparation of high yields of mixtures rich in polychlorinated pyridines by maintaining a chlorine to 3,5-lutidine weight ratio of greater than about 7:1 when reacting chlorine and 3,5-lutidine or 3,5-lutidine 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 2 moles 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.

REFERENCES:
patent: 3420833 (1969-01-01), Taplin
patent: 3573315 (1971-03-01), Handele et al.
patent: 3732230 (1973-05-01), Brewer et al.
patent: 4184041 (1980-01-01), Nishiyama
patent: 4256894 (1981-03-01), Dietsche et al.
Werner et al., Chemical Abstracts, 97:92160f (1982).

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