1-(tert-Butoxycarbonyl)-4-piperidinecarboxylic acid → Tert-butyl 4-(hydroxymethyl)piperidine-1-carboxylate

HRID 898810Notes

Reaction equation

HRID 898810 reaction equation
[C:1]([N:8]1[CH2:16][CH2:15][CH:11]([C:12](O)=[O:13])[CH2:10][CH2:9]1)([O:3][C:4]([CH3:7])([CH3:6])[CH3:5])=[O:2].B.C1COCC1>C1COCC1>[C:1]([N:8]1[CH2:16][CH2:15][CH:11]([CH2:12][OH:13])[CH2:10][CH2:9]1)([O:3][C:4]([CH3:7])([CH3:6])[CH3:5])=[O:2]

Participants

4

Reactant 2

HCID 3928711-(tert-Butoxycarbonyl)-4-piperidinecarboxylic acidHCID 2723981Borane;tetrahydrofuran

Product 1

HCID 2764081Tert-butyl 4-(hydroxymethyl)piperidine-1-carboxylateYield 85%

Reagents, catalysts & solvents 1

HCID 8028TetrahydrofuranSolvent

Conditions

Temperature
0 °C

Procedure

1-Boc-isonipecotic acid (10.0 g, 214 mmol) was dissolved in THF (400 mL) and cooled to 0° C. A solution of BH3.THF (180 mL, 1 N in THF, 180 mmol) was added slowly. The mixture stirred for 1 h at 0° C. and was allowed to warm to room temperature for 12 h. The mixture was carefully quenched with water and diluted with ethyl acetate. The water layer was extracted with ethyl acetate. The organic layers were combined, washed with brine, dried (Na2SO4), filtered and concentrated to provide 1-Boc-piperidine-4-methanol (7.98 g, 85%) as a white solid.

Workup

  1. temperatureto warm to room temperature for 12 h
  2. customThe mixture was carefully quenched with water
  3. additiondiluted with ethyl acetate
  4. extractionThe water layer was extracted with ethyl acetate
  5. washwashed with brine
  6. dry with materialdried (Na2SO4)
  7. filtrationfiltered
  8. concentrationconcentrated

Sources & evidence

ORD record
ord-064e9c6d7ce444cdbf65eae86b82e731
Source dataset
uspto-grants-2008_04
Patent number
US07351822B2

Reaction notes

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