反应详情

1-[2-(4-Hydroxyphenoxy)ethyl]-1-hydroxy-4-(4-methylbenzyl)piperidine hydrochloride. To a solution of 1-[2-(4-benzyloxyphenoxy)ethyl]-4-hydroxy-4-(4-methylbenzyl)piperidine hydrochloride (0.25 g, 0.53 mmol) in 30 mL of methanol was added 62.5 mg of 20% Pd(OH)2. The resulting mixture was hydrogenated at 20 psi of hydrogen for 3 h. The catalyst was removed through a short column of celite (5 g) and washed with methanol (3×15 mL). Methanol was evaporated in vacuo to give a residue, to which 50 mL of ether was added. The resulting mixture was stirred overnight. A white solid was collected by filtration and dried in vacuo, giving 200 mg (100%) of the title product: mp 133-135° C.

1. customThe catalyst was removed through a short column of celite (5 g)
2. washwashed with methanol (3×15 mL)
3. customMethanol was evaporated in vacuo
4. customto give a residue
5. filtrationA white solid was collected by filtration
6. customdried in vacuo