Method of preparation of 3,5-dichloro-2,4,6- trifluoropyridine

Details Method of preparation of 3,5-dichloro-2,4,6- trifluoropyridine Method of preparation of 3,5-dichloro-2,4,6- trifluoropyridine

C - Chemistry, Metallurgy

07

D

260/295.2

C07D 213/61 (2006.01)

Patent

CA 1301763

ABSTRACT The preparation of 3,5-dichloro-2,4,6- trifluoropyridine from pentachloropyridine and potassium fluoride was found to proceed in high yield and at a rapid rate with little tar formation when the reaction is conducted under essentially anhydrous conditions in N-methylpyrrolidone solvent at temperatures below 170°C. High yields of this intermediate used in making herbicides are obtained. 35,525-F

549835

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