Process for the preparation of pyrimidine derivatives

Details Process for the preparation of pyrimidine derivatives Process for the preparation of pyrimidine derivatives

C - Chemistry, Metallurgy

07

D

260/260

C07D 239/60 (2006.01)

Patent

CA 2006075

5-17348/+ Process for the preparation of pyrimidine derivatives Abstract of the Disclosure 4,6-Bis(difluoromethoxy)pyrimidines of formula I Image (I) wherein R is C1-C4alkyl or unsubstituted or substituted phenyl or benzyl, are prepared by reacting a 4,6-dihydroxypyrimidine dialkali metal salt of formula II Image (II) wherein R is as defined for formula I and Me is an alkali metal, with chlorodifluoromethane in a solvent selected from the group consisting of ketones and alkyl cyanides, in the presence of 0.05 to 1.1 mol of water per mol of dialkali metal salt of formula II.

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