Process for the preparation of pyrimidines

Details Process for the preparation of pyrimidines Process for the preparation of pyrimidines

1988-02-16

1990-10-02

Ford, John M.

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

Organic compounds

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

544321, C07D23942, C07D23952, C07D23958

Patent

active

049608878

ABSTRACT:
The invention relates to a process for the preparation of compounds of the formula I ##STR1## in which X and Y denote O or S; R.sup.1 and R.sup.2 denote (substituted) alkyl, R.sup.3 denotes H or a --COR.sup.4 radical in which R.sup.4 is alkyl, halogenoalkyl, alkoxy, halogenoalkoxy, (substituted) phenyl or (substituted) phenoxy, wherein a propanediimidate of the formula II ##STR2## or a salt thereof is reacted, in an inert solvent and in the presence of a base, with a carbonic acid imine derivative of the formula III ##STR3## in which R.sup.5 denotes halogen, alkoxy, alkylthio, phenoxy or phenylthio.

REFERENCES:
patent: 4169719 (1979-10-01), Levitt
patent: 4492598 (1985-01-01), Willms et al.
J. Am. Chem. Soc., "Orthoesters and Related Compounds from Mslono-and Succinonitriles", S. M. McElvain and Juel. P. Schroeder, vol. 71, p. 40 (1949).

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