Process for the preparation of cyanotetrachlorobenzenes

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

C - Chemistry, Metallurgy

07

C

260/558.4, 260/5

C07C 121/50 (1985.01)

Patent

CA 1213904

Abstract Process for the Preparation of Cyanotetrachlorobenzenes Cyanotetrachlorobenzenes, especially ortho- and para- dicyanotetrachlorobenzenes, are prepared by reacting in a liquid medium at 20-100°C a corresponding nitrotetrachloro- benzene 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.

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