4-[(4-Benzyloxy-phenyl)-(3-methyl-butyl)-amino]-piperidine-1-carboxylic acid tert-butyl ester → 4-[(4-Hydroxy-phenyl)-(3-methyl-butyl)-amino]-piperidine-1-carboxylic acid tert-butyl ester

HRID 1069459Notes

Reaction equation

HRID 1069459 reaction equation
[C:1]([O:5][C:6]([N:8]1[CH2:13][CH2:12][CH:11]([N:14]([C:20]2[CH:25]=[CH:24][C:23]([O:26]CC3C=CC=CC=3)=[CH:22][CH:21]=2)[CH2:15][CH2:16][CH:17]([CH3:19])[CH3:18])[CH2:10][CH2:9]1)=[O:7])([CH3:4])([CH3:3])[CH3:2]>C1COCC1.CO.[Pd]>[C:1]([O:5][C:6]([N:8]1[CH2:13][CH2:12][CH:11]([N:14]([C:20]2[CH:25]=[CH:24][C:23]([OH:26])=[CH:22][CH:21]=2)[CH2:15][CH2:16][CH:17]([CH3:18])[CH3:19])[CH2:10][CH2:9]1)=[O:7])([CH3:3])([CH3:4])[CH3:2]

Participants

4

Reactant 1

HCID 537121684-[(4-Benzyloxy-phenyl)-(3-methyl-butyl)-amino]-piperidine-1-carboxylic acid tert-butyl ester

Product 1

HCID 542988674-[(4-Hydroxy-phenyl)-(3-methyl-butyl)-amino]-piperidine-1-carboxylic acid tert-butyl esterYield 82%

Reagents, catalysts & solvents 2

HCID 23938PalladiumCatalystHCID 21899815MeOH tetrahydrofuranSolvent

Procedure

4-[(4-Benzyloxy-phenyl)-(3-methyl-butyl)-amino]-piperidine-1-carboxylic acid tert-butyl ester (9.59 g, 21.2 mmol) was dissolved in 1:1 THF/MeOH (100 mL), treated with 20% Pd/C (1.0 g), and shaken under an atmosphere of H2 (47 psi) for 15 hours. The reaction was filtered and the solution was concentrated. The crude material was chromatographed on silica gel eluting with 4:1 hexane/EtOAc to give 6.3 g (82%) of the desired product.

Workup

  1. filtrationThe reaction was filtered
  2. concentrationthe solution was concentrated
  3. customThe crude material was chromatographed on silica gel eluting with 4:1 hexane/EtOAc

Sources & evidence

ORD record
ord-b7990c531c6d4326aa67b7dfbe430baf
Source dataset
uspto-grants-2001_06
Patent number
US06251918B1

Reaction notes

Loading…