Process for the preparation of cyanotetrachlorobenzenes

Details Process for the preparation of cyanotetrachlorobenzenes Process for the preparation of cyanotetrachlorobenzenes

1984-02-01

1985-05-14

Torrence, Dolph H.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

C07C12150

Patent

active

045171297

ABSTRACT:
Cyanotetrachlorobenzenes, especially ortho- and para- dicyanotetrachlorobenzenes, are prepared by reacting in a liquid medium at 20.degree.-100.degree. C. a corresponding nitrotetrachlorobenzene with, in solution, an inorganic cyanide. Preferably the liquid medium is a two-phase water/water-immiscible organic solvent system, e.g. water/chloroform, a phase transfer catalyst is present and the inorganic cyanide is an alkali metal or alkaline earth metal cyanide.
The compounds are useful chemical intermediates in the synthesis of, for instance, pesticidal compounds.

REFERENCES:
Chemical Abstracts, 89, 42721 (1978).
Letsinger and Hautala, Tet. Lett., 4205 (1969).
Lok et al., Tet. Lett., 4701 (1970).
Hashem, Rev. Roumaine Chim., 27, 429 (1982).
Bunnett and Zahler, Chim. Rev. 49 273 (1951).
JACS, 88 2884 (1966).
JACS, 43, 898 (1921).
Finger and Kruse, JACS 78, 6034 (1978).

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