Preparation of symmetrical tetrachloropyridine

Details Preparation of symmetrical tetrachloropyridine Preparation of symmetrical tetrachloropyridine

1981-04-20

1982-03-30

Rotman, Alan L.

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

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

C07D21302

Patent

active

043225381

ABSTRACT:
Symmetrical tetrachloropyridine (2,3,5,6-tetrachloropyridine) is prepared by reacting pentachloropyridine with a source of iodide ions in the presence of a proton source and a solvent medium. The reaction is preferably carried out in a polar, aprotic solvent medium and heated at a temperature of from about 100.degree. C. to about 200.degree. C.

REFERENCES:
patent: 3420833 (1969-01-01), Taplin
patent: 3538100 (1970-11-01), Smith
patent: 3993654 (1976-11-01), Dean et al.
Collins et al., Journal of the Chemical Society (C), pp. 167-174, London, (1971).

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