Process for the preparation of substituted...

Details Process for the preparation of substituted... Process for the preparation of substituted...

C - Chemistry, Metallurgy

07

D

C07D 213/61 (2006.01) C07D 213/84 (2006.01)

Patent

CA 2089938

Abstract Process for the preparation of substituted 2,3-difluoro- pyridines The invention relates to a novel process for the preparation of substituted 2,3-difluoropyridines by reaction of substituted 2,3-halopyridines with fluoride salts in the presence of phase transfer catalysts, preferably in polar aprotic solvents, without removing the resulting substituted 2,3-difluoropyridines continuously from the reaction mixture. The substituted 2,3-difluoropyridines which can be prepared according to the invention are, inter alia, starting materials for the preparation of plant protection agents or pharmaceuticals.

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