Benzyl Chloride → {(1R,6S)-6-[(Benzyloxy)methyl]cyclohex-3-en-1-yl}methanol

HRID 1493892Notes

Reaction equation

HRID 1493892 reaction equation
[OH:1][CH2:2][C@H:3]1[C@@H:8]([CH2:9][OH:10])[CH2:7][CH:6]=[CH:5][CH2:4]1.[H-].[Na+].[CH2:13](Cl)[C:14]1[CH:19]=[CH:18][CH:17]=[CH:16][CH:15]=1>CN(C)C=O>[OH:1][CH2:2][C@H:3]1[C@@H:8]([CH2:9][O:10][CH2:13][C:14]2[CH:19]=[CH:18][CH:17]=[CH:16][CH:15]=2)[CH2:7][CH:6]=[CH:5][CH2:4]1

Participants

5

Reactant 3

HCID 7503Benzyl ChlorideHCID 24758Sodium hydrideHCID 11275057cis-1,2-Dihydroxymethylcyclohex-4-ene

Product 1

HCID 67946542{(1R,6S)-6-[(Benzyloxy)methyl]cyclohex-3-en-1-yl}methanolYield 62.3%

Reagents, catalysts & solvents 1

HCID 6228DimethylformamideSolvent2×

Procedure

The diol (1) (16.2 g) in dimethylformamide (50 ml) is added dropwise to sodium hydride (3.1 g) in dimethylformamide (DMF) (50 ml). The mixture is stirred for 20 minutes and then benzyl chloride (16 g) is added and stirring is continued for a further 18 hours at 70° C. After removing the DMF in vacuo, water is added and the mixture is extracted with ether. The combined extracts are dried (MgSO4) and the solvent is evaporated to give a residue which is distilled under reduced pressure to give the title compound as an oil (16.5 g, ca. 60%), b.p. 140°-145° C./0.03 mm, νmax (film) 3440 and 1600 cm-1.

Workup

  1. stirringstirring
  2. waitis continued for a further 18 hours at 70° C
  3. customAfter removing the DMF in vacuo, water
  4. additionis added
  5. extractionthe mixture is extracted with ether
  6. dry with materialThe combined extracts are dried (MgSO4)
  7. customthe solvent is evaporated
  8. customto give a residue which
  9. distillationis distilled under reduced pressure

Sources & evidence

ORD record
ord-ee111f37249f41a581a5c6096ee8e35b
Source dataset
uspto-grants-1991_06
Patent number
US05025034

Reaction notes

Loading…