Benzyl Bromide → 3-Benzyloxymethylcyclohexanol

HRID 1956748Notes

Reaction equation

HRID 1956748 reaction equation
[H-].[Na+].[OH:3][CH2:4][CH:5]1[CH2:10][CH2:9][CH2:8][CH:7]([OH:11])[CH2:6]1.[CH2:12](Br)[C:13]1[CH:18]=[CH:17][CH:16]=[CH:15][CH:14]=1>CCCCCC.CN(C)C=O>[CH2:12]([O:3][CH2:4][CH:5]1[CH2:10][CH2:9][CH2:8][CH:7]([OH:11])[CH2:6]1)[C:13]1[CH:18]=[CH:17][CH:16]=[CH:15][CH:14]=1

Participants

6

Reactant 3

HCID 7498Benzyl BromideHCID 24758Sodium hydrideHCID 157273273-(Hydroxymethyl)cyclohexan-1-ol

Product 1

HCID 157273243-BenzyloxymethylcyclohexanolYield 56.4%

Reagents, catalysts & solvents 2

HCID 6228DimethylformamideSolventHCID 8058HexaneSolvent

Procedure

50% Sodium hydride (5.77 g; 120 mmol) is washed with n-hexane, and dimethylformamide (50 ml) is added thereto. To the resultant mixture, 3-hydroxymethylcyclohexanol (9) (10.0 g; 76.8 mmol) is dropwise added under ice-cooling, and then benzyl bromide (13.15 g; 76.8 mmol) is dropwise added thereto under ice-cooling. The resulting mixture is stirred at a temperature of 0° to 10° C. for 5 hours. The reaction mixture is poured into ice-water, extracted with toluene. The organic layer is washed with water, dried and concentrated under reduced pressure. The residue is chromatographed on a silica gel column to give 3-benzyloxymethylcyclohexanol (10) (9.55 g).

Workup

  1. additionis added
  2. temperaturecooling
  3. temperatureunder ice-cooling
  4. extractionextracted with toluene
  5. washThe organic layer is washed with water
  6. customdried
  7. concentrationconcentrated under reduced pressure
  8. customThe residue is chromatographed on a silica gel column

Sources & evidence

ORD record
ord-b5613c2257dd469484d5c1af214cb1c8
Source dataset
uspto-grants-1998_07
Patent number
US05780632

Reaction notes

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