Chlorination process

Details Chlorination process Chlorination process

1993-09-21

1996-01-16

Rotman, Alan L.

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

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

546345, 546346, C07D213127, C07D21357, C07D21361

Patent

active

054849292

ABSTRACT:
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.degree. to about 500.degree. C. The materials are then subsequently passed through a second reaction zone at a relatively lower temperature, for example below about 340.degree. C.

REFERENCES:
patent: 2820791 (1958-01-01), Shermer
patent: 2839534 (1958-06-01), Shrader et al.
patent: 3153044 (1964-10-01), Zaslowsky
patent: 3251848 (1966-05-01), Taplin III
patent: 3412095 (1968-11-01), Clark
patent: 4054499 (1977-10-01), Kawamura et al.
patent: 5247093 (1993-09-01), Toomey

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