Phenol → 1-Bromo-2-fluoro-4-(1-phenoxyethyl)benzene

HRID 1501209Notes

Reaction equation

HRID 1501209 reaction equation
[Br:1][C:2]1[CH:7]=[CH:6][C:5]([CH:8]([OH:10])[CH3:9])=[CH:4][C:3]=1[F:11].[C:12]1(O)[CH:17]=[CH:16][CH:15]=[CH:14][CH:13]=1.C1(P(C2C=CC=CC=2)C2C=CC=CC=2)C=CC=CC=1.N(C(OC(C)C)=O)=NC(OC(C)C)=O>O1CCCC1>[Br:1][C:2]1[CH:7]=[CH:6][C:5]([CH:8]([O:10][C:12]2[CH:17]=[CH:16][CH:15]=[CH:14][CH:13]=2)[CH3:9])=[CH:4][C:3]=1[F:11]

Participants

6

Reactant 4

HCID 996PhenolHCID 11776TriphenylphosphineHCID 75555Diisopropyl diazene-1,2-dicarboxylateHCID 717565421-(4-Bromo-3-fluorophenyl)ethan-1-ol

Product 1

HCID 1185627341-Bromo-2-fluoro-4-(1-phenoxyethyl)benzeneYield 89%

Reagents, catalysts & solvents 1

HCID 8028TetrahydrofuranSolvent

Conditions

Temperature
0 °C

Procedure

A solution of 1-(4-bromo-3-fluorophenyl)ethanol (1 g, 4.58 mmol), phenol (474 mg, 4.58 mmol), and triphenyl phosphine (2.4 g, 6.88 mmol) was stirred in dry tetrahydrofuran (40 mL) under nitrogen atmosphere. After 1 h, the mixture was cooled to 0° C. Diisopropyl azodicarboxylate (2.3 g, 6.88 mmol) was added with drop-wise method and the reaction was stirred at room temperature for 18 hours. The solvent was evaporated and the residue was purified by column chromatography (silica gel, petroleum ether) to get 1-bromo-2-fluoro-4-(1-phenoxyethyl)benzene (900 mg, 89%).

Workup

  1. customThe solvent was evaporated
  2. customthe residue was purified by column chromatography (silica gel, petroleum ether)

Sources & evidence

ORD record
ord-c1269fa2f8c147b7a8ad9d876f1f5c61
Source dataset
uspto-grants-2015_12
Patent number
US09206128B2

Reaction notes

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