Reacción #324621

ord-ddd2cd0ac111469b85faf23225b365fa

Ecuación de reacción

Cc1cc(O)cc(C)c1Br
4-bromo-3,5-dimethylphenol
O=C([O-])[O-].[K+].[K+]
K2CO3
BrCC1CCOC1
3-(bromomethyl)tetrahydrofuran
Cc1cc(OCC2CCOC2)cc(C)c1Br
title compound
Cc1cc(OCC2CCOC2)cc(C)c1Br
3-((4-Bromo-3,5-dimethylphenoxy)methyl)tetrahydrofuran

Condiciones de reacción

Temperatura
80°CELSIUS
Condiciones detalladas
See reaction.notes.procedure_details.

Tratamiento posterior

  1. 1
    Otropartitioned between water and ethyl acetate
  2. 2
    LavadoThe organic phase is washed with brine
  3. 3
    Secadodried (MgSO4)
  4. 4
    OtroThe solvent is evaporated
  5. 5
    Otrothe residue is chromatographed on silica gel (cyclohexane/ethyl acetate 99:1→70:30)

Procedimiento

To a solution of 4-bromo-3,5-dimethylphenol (1.5 g) and K2CO3 (3.2 g) in N,N-dimethylformamide (12 mL) is added 3-(bromomethyl)tetrahydrofuran (3.6 g). The mixture is stirred for 16 hours at 80° C. and then partitioned between water and ethyl acetate. The organic phase is washed with brine and dried (MgSO4). The solvent is evaporated and the residue is chromatographed on silica gel (cyclohexane/ethyl acetate 99:1→70:30) to give the title compound. Yield: 1.72 g; LC (method 1): tR=1.37 min; Mass spectrum (ESI+): m/z=285 [M+H]+.

Fuente

DOI: 10.6084/m9.figshare.5104873.v1Patente: US08642585B2uspto-grants-2014_02