1-(4-(2-fluoropyridin-3-yl)-5,6-dihydropyridin-1(2H)-yl)ethanone → 1-(4-(2-Fluoropyridin-3-yl)piperidin-1-yl)ethanone

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반응 단계

A 2 L Parr shaker bottle was charged with 1-(2-fluoro-5′,6′-dihydro-[3,4′-bipyridin]-1′(2′H)-yl)ethanone (see PREPARATION P14.1; 44.7 g, 0.203 mol), THF (600 mL), and palladium hydroxide on carbon, 20% wet type (22 g, 50 wt %). The bottle was purged three times with H2 and was shaken at room temperature under 50 psi of H2. At 1 hour, crude 1HNMR indicated full conversion (aliquot syringe filtered and concentrated). This reaction was filtered (along with another 44.7 g batch) through a CELITE® pad. The pad was washed with THF (2×250 mL). The filtrate was concentrated under vacuum to afford 88.5 g white solid (98% yield, >99% purity by LCMS, excellent purity by 1HNMR).

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