Process for the preparation of a...

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C - Chemistry, Metallurgy

07

D

C07D 239/52 (2006.01)

Patent

CA 2199899

A novel process is described for the preparation of a 2-alkoxy-6-(trifluoromethyl)pyrimidin-4-of of the general formula: Image in which R is a C1-C8 alkyl group. In the process, cyanamide is reacted with the appropriate C1-C8 alcohol in the presence of hydrogen chloride to give the corresponding alkoxyisourea hydrochloride, which is then converted with ethyl trifluoro- acetoacetate in the presence of an alkali metal hydroxide, in water, to the end product of formula I.

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