Water → tert-Butyl 4-fluoro-4-(hydroxymethyl)piperidine-1-carboxylate

HRID 574894Notes

Reaction equation

HRID 574894 reaction equation
[F:1][C:2]1([C:15](OCC)=[O:16])[CH2:7][CH2:6][N:5]([C:8]([O:10][C:11]([CH3:14])([CH3:13])[CH3:12])=[O:9])[CH2:4][CH2:3]1.[H-].[H-].[H-].[H-].[Li+].[Al+3].O.[OH-].[Na+]>O1CCCC1>[F:1][C:2]1([CH2:15][OH:16])[CH2:3][CH2:4][N:5]([C:8]([O:10][C:11]([CH3:12])([CH3:13])[CH3:14])=[O:9])[CH2:6][CH2:7]1

Participants

6

Reactant 4

HCID 962WaterHCID 14798Sodium HydroxideHCID 21226445Aluminium lithium hydrideHCID 21306965Ethyl N-Boc-4-fluoropiperidine-4-carboxylate

Product 1

HCID 22248400tert-Butyl 4-fluoro-4-(hydroxymethyl)piperidine-1-carboxylate

Reagents, catalysts & solvents 1

HCID 8028TetrahydrofuranSolvent2×

Procedure

1-Tert-butyl 4-ethyl 4-fluoropiperidine-1,4-dicarboxylate (1.0 g) in tetrahydrofuran (5 mL) was treated with 1.0 N LiAlH4 in tetrahydrofuran (2.54 mL) at 0° C. The reaction mixture was stirred at room temperature for 2 hours. Water (0.6 mL) was added to the reaction mixture drop-wise, followed by 2 N aqueous NaOH (0.2 mL). The reaction was stirred for another 1 hour. The solid was removed by filtration via a pack of diatomaceous earth and washed with ethyl acetate. The filtrate was washed with brine, dried over MgSO4, filtered, and concentrated to give the product.

Workup

  1. stirringThe reaction was stirred for another 1 hour
  2. customThe solid was removed by filtration via a pack of diatomaceous earth
  3. washwashed with ethyl acetate
  4. washThe filtrate was washed with brine
  5. dry with materialdried over MgSO4
  6. filtrationfiltered
  7. concentrationconcentrated
  8. customto give the product

Sources & evidence

ORD record
ord-112ce4a76e57462ebad471b672f26387
Source dataset
uspto-grants-2015_05
Patent number
US09034875B2

Reaction notes

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