tert-Butyl 4-(3-fluoro-4-methoxybenzylidene)piperidine-1-carboxylate → HCID 69354983, compound

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A solution of 4-(3-fluoro-4-methoxy-benzylidene)-piperidine-1-carboxylic acid tert-butyl ester (4.7 g, 14.6 mmol) in methanol (400 mL) was allowed to stir under atmospheric pressure of hydrogen at room temperature in the presence of 10% palladium on carbon (0.8 g) for 16 hours. Removal of the catalyst by filtration and evaporation of the filtrate gave a crude oil. Silica gel chromatography eluting with ethyl acetate in hexane (10%) gave the title compound (4.3 g, 99%) as a colourless oil.

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