N-Methoxy-N-methylpicolinamide → (6-Fluoro-5-trifluoromethyl-cyclohexa-2,4-dienyl)-pyridin-2-yl-methanone

Participants

Reaction Steps

Then a solution of pyridine-2-carboxylic acid methoxy-methyl-amide (1.5 g, 9 mmoles) was allowed to react with 2-flouro-3-trifluoromethylphenylmagnesium bromide (2.72 g, 10 mmoles) in THF (30 mL) at 60° C. overnight. The reaction mixture was cooled and diluted with ethyl acetate and ammonium chloride. The organic portion was washed with brine and dried over MgSO4 and stripped to afford a crude product, which was purified by chromatography with CH2Cl2 to give (6-fluoro-5-trifluoromethyl-cyclohexa-2,4-dienyl)-pyridin-2-yl-methanone as a colorless liquid (1.6 gr., 65%).

Provenance & Evidence