3-Fluoro-4-methylaniline → N-(3-fluoro-4-methylphenyl)-3-nitro-2-pyridylamine

HRID 2272690Notes

Reaction equation

HRID 2272690 reaction equation
Cl[C:2]1[C:7]([N+:8]([O-:10])=[O:9])=[CH:6][CH:5]=[CH:4][N:3]=1.[F:11][C:12]1[CH:13]=[C:14]([CH:16]=[CH:17][C:18]=1[CH3:19])[NH2:15].C(=O)([O-])[O-].[K+].[K+]>CS(C)=O.O>[F:11][C:12]1[CH:13]=[C:14]([NH:15][C:2]2[C:7]([N+:8]([O-:10])=[O:9])=[CH:6][CH:5]=[CH:4][N:3]=2)[CH:16]=[CH:17][C:18]=1[CH3:19]

Participants

6

Reactant 3

HCID 99573-Fluoro-4-methylanilineHCID 11430Potassium CarbonateHCID 796132-Chloro-3-nitropyridine

Product 1

HCID 40676958N-(3-fluoro-4-methylphenyl)-3-nitro-2-pyridylamine

Reagents, catalysts & solvents 2

HCID 679Dimethyl SulfoxideSolventHCID 962WaterSolvent

Conditions

Temperature
140 °C

Procedure

A mixture of 2-chloro-3-nitropyridine (4.76 g, 30.0 mmol), 3-fluoro-4-methylaniline (3.75 g, 30.0 mmol) and potassium carbonate (8.29 g, 60.0 mmol) in dimethyl sulfoxide (30 mL) was stirred at 140° C. for 40 minutes. The reaction mixture was then cooled to room temperature, diluted with water, and extracted with ethyl acetate. The combined organic layers were washed with water, dried over magnesium sulfate, filtered, and concentrated in vacuo to afford the product as a black solid. Yield: 6.78 g, 27.4 mmol, 91%. 1H NMR (400 MHz, CDCl3) δ 10.11 (br s, 1H), 8.54 (dd, J=8.3, 1.8 Hz, 1H), 8.51 (dd, J=4.6, 1.8 Hz, 1H), 7.59-7.64 (m, 1H), 7.15-7.21 (m, 2H), 6.86 (dd, J=8.4, 4.6 Hz, 1H), 2.28 (d, J=2.0 Hz, 3H).

Workup

  1. temperatureThe reaction mixture was then cooled to room temperature
  2. extractionextracted with ethyl acetate
  3. washThe combined organic layers were washed with water
  4. dry with materialdried over magnesium sulfate
  5. filtrationfiltered
  6. concentrationconcentrated in vacuo

Sources & evidence

ORD record
ord-2fd733faa1d14d069be816dd73fd45f1
Source dataset
uspto-grants-2015_09
Patent number
US09120788B2

Reaction notes

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