Process for the preparation of 2,4,6-trichloropyrimidine

Details Process for the preparation of 2,4,6-trichloropyrimidine Process for the preparation of 2,4,6-trichloropyrimidine

1997-12-03

1999-04-27

Ford, John M.

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

Organic compounds

Nitrogen attached directly or indirectly to the purine ring...

C07D23930

Patent

active

058980733

ABSTRACT:
Process for the preparation of 2,4,6-trichloropyrimidine, characterized in that barbituric acid is reacted in a first reaction step with phosphorus oxychloride in the presence or absence of a catalyst, and then, in a second reaction step, is reacted with phosphorus pentachloride or with reactants forming this, in particular phosphorus trichloride and chlorine, at a temperature of 20 to below 80.degree. C.

REFERENCES:
patent: 3714164 (1973-01-01), Steffan
patent: 5525724 (1996-06-01), Hunds
patent: 5712394 (1998-01-01), Hansmann et al.
patent: 5719285 (1998-02-01), Steffan
J. Bradley et al., Journal of the Chemical Society, 1944, London, pp. 678-679.
H. Bredereck et al., Chemische Berichte, vol. 92, 1959, pp. 2937-2943.

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