反应详情

1,1,1-Trifluoro-4-[5-fluoro-2-(methyloxy)phenyl]-4-methyl-2-{[(phenylmethyl)amino]methyl}-2-pentanol (Intermediate 17, 63 g, 0.158 mol) was added to a stirred solution of 10% Pd/C (12.6 g, 50% wet) in ethanol (1.07 L) at 20° C. in a nitrogen purged vessel. The mixture was hydrogenated at 20° C. and atmospheric pressure until there was no further hydrogen uptake. The suspension was then filtered through Celite and glass fibre filter paper to remove the catalyst, and the cake washed with ethanol (120 mL). The combined filtrate and washings were evaporated under reduced pressure to give the title compound as a light grey solid (47.5 g).

1. customwas hydrogenated at 20° C.
2. filtrationThe suspension was then filtered through Celite and glass fibre filter paper
3. customto remove the catalyst
4. washthe cake washed with ethanol (120 mL)
5. customThe combined filtrate and washings were evaporated under reduced pressure