Benzyl Bromide → HCID 59410130, compound

HRID 2404882Notes

Reaction equation

HRID 2404882 reaction equation
[Br:1][C:2]1[CH:7]=[C:6]([F:8])[C:5]([N+:9]([O-:11])=[O:10])=[CH:4][C:3]=1[OH:12].C([O-])([O-])=O.[Cs+].[Cs+].[CH2:19](Br)[C:20]1[CH:25]=[CH:24][CH:23]=[CH:22][CH:21]=1>CN(C=O)C>[CH2:19]([O:12][C:3]1[CH:4]=[C:5]([N+:9]([O-:11])=[O:10])[C:6]([F:8])=[CH:7][C:2]=1[Br:1])[C:20]1[CH:25]=[CH:24][CH:23]=[CH:22][CH:21]=1

Participants

5

Reactant 3

HCID 7498Benzyl BromideHCID 10796Cesium carbonateHCID 132681792-Bromo-4-fluoro-5-nitrophenol

Product 1

HCID 59410130HCID 59410130, compound

Reagents, catalysts & solvents 1

HCID 6228DimethylformamideSolvent

Procedure

To a solution of 2-bromo-4-fluoro-5-nitro-phenol (3.5 g, 14.83 mmol) and Cs2CO3 (5.80 g, 17.80 mmol) in DMF (26 mL) was added benzyl bromide (2.80 g, 1.94 mL, 16.31 mmol) dropwise. The reaction was stirred at room temperature under an inert atmosphere for 2 h. The reaction was quenched with water and the aqueous layer was extracted with EtOAc (3×10 mL). The combined organic layer was dried over Na2SO4, filtered and concentrated. The residue was purified by silica gel column chromatography using 40% DCM/hexane gradient to yield 1-(benzyloxy)-2-bromo-4-fluoro-5-nitrobenzene. 1H NMR (400 MHz, CDCl3) δ 7.65 (d, J=6.4 Hz, 1H), 7.59 (d, J=9.9 Hz, 1H), 7.52-7.34 (m, 5H), 5.23 (s, 2H).

Workup

  1. customThe reaction was quenched with water
  2. extractionthe aqueous layer was extracted with EtOAc (3×10 mL)
  3. dry with materialThe combined organic layer was dried over Na2SO4
  4. filtrationfiltered
  5. concentrationconcentrated
  6. customThe residue was purified by silica gel column chromatography

Sources & evidence

ORD record
ord-e3ce3baf0d5f41a0b82f3d5ada82f146
Source dataset
uspto-grants-2014_08
Patent number
US08802700B2

Reaction notes

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