Sodium hydride → 1-Bromo-4-methoxy-2-(methoxymethoxy)benzene

HRID 650767Notes

Reaction equation

HRID 650767 reaction equation
[H-].[Na+].[Br:3][C:4]1[CH:9]=[CH:8][C:7]([O:10][CH3:11])=[CH:6][C:5]=1[OH:12].[CH3:13][O:14][CH2:15]Br>CN(C=O)C>[Br:3][C:4]1[CH:9]=[CH:8][C:7]([O:10][CH3:11])=[CH:6][C:5]=1[O:12][CH2:13][O:14][CH3:15]

Participants

5

Reactant 3

HCID 24758Sodium hydrideHCID 83093Bromomethyl methyl etherHCID 134938392-Bromo-5-methoxyphenol

Product 1

HCID 148270371-Bromo-4-methoxy-2-(methoxymethoxy)benzeneYield 92,410.5%

Reagents, catalysts & solvents 1

HCID 6228DimethylformamideSolvent

Procedure

To a suspension of NaH (2.5 g, 0.06 mol) in dry DMF (100 mL) at 0° C. was added solution of 1-bromo-2-hydroxy-4-methoxybenzene (10.6 g, 0.05 mol). After stirring at 0° C. for 30 min. bromomethyl methyl ether (7.8 g, 0.06 mmol) were dropwise added. The mixture was warmed to room temperature over 20 min. and then stirred for 2 h, it was then quenched cautiously by the addition of cold dilute HCl and extracted with EtOAc. The EtOAc extract was washed successively with; H2O, 5% aqueous NaHCO3, H2O and finally brine. After drying (MgSO4) filtration and evaporation gave liquid. The product was purified by distillation (85° C., 0.2 mm Hg) to give the title compound as a colorless oil (13.7 g, 97%).

Workup

  1. additionwere dropwise added
  2. customit was then quenched cautiously by the addition of cold dilute HCl
  3. extractionextracted with EtOAc
  4. extractionThe EtOAc extract
  5. washwas washed successively with
  6. customAfter drying
  7. filtration(MgSO4) filtration and evaporation
  8. customgave liquid
  9. distillationThe product was purified by distillation (85° C., 0.2 mm Hg)

Sources & evidence

ORD record
ord-21167d78d4bf4bf095806e369ec47ac2
Source dataset
uspto-grants-2001_08
Patent number
US06274737B1

Reaction notes

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