Control of isomer distribution in a chlorination process

Details Control of isomer distribution in a chlorination process Control of isomer distribution in a chlorination process

1989-09-28

1990-07-03

Schwartz, Richard A.

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

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

C07D21361

Patent

active

049392638

ABSTRACT:
The relative amounts of 5,6-dichloro-2-(trichloromethyl)pyridine and 3,6-dichloro-2-(trichloromethyl)pyridine obtained in the chlorination of 2-chloro-6-(trichloromethyl)pyridine in the liquid phase at temperatures of about 160.degree. C. to about 220.degree. C. and in the presence of a metal halide catalyst, such as ferric chloride, are controlled by regulating the amount of hydrogen chloride present in the system, adding hydrogen chloride to obtain a mixture enriched in 5,6-dichloro-2-(trichloromethyl)pyridine or removing hydrogen chloride, usually by passing excess chlorine or an inert gas through the system, to obtain a mixture enriched in 3,6-dichloro-2-(trichloromethyl)pyridine.

REFERENCES:
patent: 3418323 (1968-12-01), Johnston et al.
patent: 3732230 (1973-05-01), Brewer et al.
patent: 4227001 (1980-10-01), Dietsche et al.
patent: 4256894 (1989-03-01), Dietsche et al.
patent: 4487935 (1984-12-01), Marinak et al.
patent: 4564681 (1986-01-01), Marinak et al.
patent: 4577027 (1986-03-01), Marinak et al.
patent: 4701532 (1987-10-01), Humphreys et al.

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