Chlorination process

Details Chlorination process Chlorination process

C - Chemistry, Metallurgy

07

D

C07D 213/85 (2006.01) C07D 213/26 (2006.01) C07D 213/61 (2006.01) C07D 213/84 (2006.01)

Patent

CA 2150540

A process for the selective chlorination of pyridine, a lower alkyl pyridine or 3-cyanopyridine includes passing the pyridine compound, chlorine and an inert gas through a two stage reaction. In a first reaction zone, these materials are subjected to a hot spot controlled at a temperature of about 350 °C to about 500 °C. The materials are then subsequently passed through a second reaction zone at a relatively lower temperature, for example below about 340 °C.

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