Process for the preparation of polychloropyrimidines

Details Process for the preparation of polychloropyrimidines Process for the preparation of polychloropyrimidines

1995-08-11

1998-02-17

Gupta, Yogendra N.

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

Organic compounds

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

544299, 544319, C07D23930

Patent

active

057192855

ABSTRACT:
Polychloropyrimidines, in particular 4,6-dichloropyrimidine and 2,4,6-trichloropyrimidine, are obtained in a particularly advantageous manner from polyhydroxypyrimidines or tautomeric keto compounds thereof and excess phosphorus oxychloride in the presence of a tertiary amine if, in this reaction,

REFERENCES:
patent: 3714164 (1973-01-01), Steffan
A.E.A. Porter, in: "Comprehensive Organic Chemistry",vol. 4, pp. 119 -120, P.G. Sammes ed., Pergamon Press Ltd., New York, (1979).
D.J. Brown, in: "Comprehensive Heterocyclic Chemistry", A.R. Katritzky, et al. ed., vol. 3, Part 2B, p. 89, Pergamon Press Ltd., New York, (1984).
D.J. Brown, et al., in "The Chemistry of Heterocyclic Compounds", E.C. Taylor ed., vol. 52, pp. 329-339 , J. Wiley & Sons, New York, (1994).
G.W. Kenner, et al., J. Chem. Soc., London, pp. 574-575 (1943).
R. Hall, J. Chem. Soc., London, P. 2214 (1951).
C. Hennart et al., Bull. Chim. Soc., France, pp. 741-742 (1959).
V.A. Zasosov, Khim.-Pharm. Zhurnal, vol. 8, No. 12 pp. 741-744 (1974).

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