p-Fluoronitrobenzene → 4-(4-Nitrophenoxy)pyridine

HRID 1725690Notes

Reaction equation

HRID 1725690 reaction equation
[OH:1][C:2]1[CH:7]=[CH:6][N:5]=[CH:4][CH:3]=1.F[C:9]1[CH:14]=[CH:13][C:12]([N+:15]([O-:17])=[O:16])=[CH:11][CH:10]=1.C([O-])([O-])=O.[K+].[K+]>CN(C=O)C.O>[N:5]1[CH:6]=[CH:7][C:2]([O:1][C:9]2[CH:14]=[CH:13][C:12]([N+:15]([O-:17])=[O:16])=[CH:11][CH:10]=2)=[CH:3][CH:4]=1

Participants

6

Reactant 3

HCID 9590p-FluoronitrobenzeneHCID 11430Potassium CarbonateHCID 178418642HCID 178418642, compound

Product 1

HCID 445585384-(4-Nitrophenoxy)pyridineYield 90%

Reagents, catalysts & solvents 2

HCID 962WaterSolventHCID 6228DimethylformamideSolvent

Procedure

To a solution of 4-hydroxypyridine (4.42 g, 45.8 mmol) and 1-fluoro-4-nitrobenzene (4.89 mL, 45.8 mmol) in anhydrous DMF (50 mL) was added anhydrous K2CO3 (13.0 g, 91.6 mmol) in one portion. The mixture was heated at the reflux temperature with stirring for 24 h, cooled to room temperature and poured in water (300 mL). The solid that separated was filtered, washed with water and dried well under high vacuum to yield 8.9 g (90%) of desired product, 4-(4-pyridinyloxy)-1-nitrobenzene. 1H NMR (CDCl3, 300 MHz): δ 8.36 (d, 2H, J=9.0 Hz), 8.11 (d, 2H, J=8.1 Hz), 7.83 (d, 2H, J=9.0 Hz), 6.27 (d, 2H, J=7.8 Hz); LCMS (m/z): 217 (MH+).

Workup

  1. temperatureThe mixture was heated at the reflux temperature
  2. customThe solid that separated
  3. filtrationwas filtered
  4. washwashed with water
  5. customdried well under high vacuum

Sources & evidence

ORD record
ord-66b770db58244915adef7736988f68f8
Source dataset
uspto-grants-2009_02
Patent number
US07491732B2

Reaction notes

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