反应详情

4-(2-bromo-5-(trifluoromethyl)phenyl)-1-methyl-1,2,3,6-tetrahydropyridine was dissolved in 20 mL ethanol and the solution was treated with platinum (iv) oxide (0.194 g, 0.854 mmol), and was placed under 45 psi H2 for one hour. LC/MS showed product and debrominated product, so the reaction mixture was diluted with DCM, filtered through a plug of diatomaceous earth and was concentrated. Purification of the crude residue by silica gel column chromatography (0 to 97% EtOAc/heptane, 3% MeOH) gave 4-(2-bromo-5-(trifluoromethyl)phenyl)-1-methylpiperidine (0.065 g, 0.202 mmol, 2.363% yield). m/z (ESI) 322.0 (M+Na)+;

1. filtrationfiltered through a plug of diatomaceous earth
2. concentrationwas concentrated
3. customPurification of the crude residue by silica gel column chromatography (0 to 97% EtOAc/heptane, 3% MeOH)