tert-butyl (3RS,4RS)-4-(5-benzyloxy-pyrimidin-2-yl)-3-hydroxy-piperidine-1-carboxylate → tert-butyl (3RS,4RS)-3-hydroxy-4-(5-hydroxy-pyrimidin-2-yl)-piperidine-1-carboxylate

HRID 1858833Notes

Reaction equation

HRID 1858833 reaction equation
C([O:8][C:9]1[CH:10]=[N:11][C:12]([CH:15]2[CH2:20][CH2:19][N:18]([C:21]([O:23][C:24]([CH3:27])([CH3:26])[CH3:25])=[O:22])[CH2:17][CH:16]2[OH:28])=[N:13][CH:14]=1)C1C=CC=CC=1>CO.[Pd]>[OH:28][CH:16]1[CH:15]([C:12]2[N:13]=[CH:14][C:9]([OH:8])=[CH:10][N:11]=2)[CH2:20][CH2:19][N:18]([C:21]([O:23][C:24]([CH3:27])([CH3:26])[CH3:25])=[O:22])[CH2:17]1

Participants

4

Reactant 1

HCID 54513866tert-butyl (3RS,4RS)-4-(5-benzyloxy-pyrimidin-2-yl)-3-hydroxy-piperidine-1-carboxylate

Product 1

HCID 54564538tert-butyl (3RS,4RS)-3-hydroxy-4-(5-hydroxy-pyrimidin-2-yl)-piperidine-1-carboxylateYield 93.4%

Reagents, catalysts & solvents 2

HCID 23938PalladiumCatalystHCID 887MethanolSolvent

Procedure

A solution of 110 mg (0.29 mmol) of tert-butyl (3RS,4RS)-4-(5-benzyloxy-pyrimidin-2-yl)-3-hydroxy-piperidine-1-carboxylate in 5 ml of methanol was treated with 20 mg of 5% palladium-charcoal and hydrogenated at room temperature for 12 hours. For the working-up, the catalyst was filtered off and washed with 20 ml of methanol. The methanol solution was evaporated under reduced pressure and the resulting oil was crystallized by the addition of ether. There were obtained 80 mg (93% of theory) of tert-butyl (3RS,4RS)-3-hydroxy-4-(5-hydroxy-pyrimidin-2-yl)-piperidine-1-carboxylate in the form of colourless, slightly delequesent crystals; MS: 296 (M+H)+.

Workup

  1. filtrationthe catalyst was filtered off
  2. washwashed with 20 ml of methanol
  3. customThe methanol solution was evaporated under reduced pressure
  4. customthe resulting oil was crystallized by the addition of ether

Sources & evidence

ORD record
ord-6e7dea4100b844c7b549941587cade00
Source dataset
uspto-grants-2000_11
Patent number
US06150526

Reaction notes

Loading…