Potassium Carbonate → 4-(2-Fluoro-4-nitrophenoxy)-2-methyl-1H-pyrrolo[2,3-b]pyridine

HRID 2117166Notes

Reaction equation

HRID 2117166 reaction equation
[CH3:1][C:2]1[NH:11][C:5]2[N:6]=[CH:7][CH:8]=[C:9]([OH:10])[C:4]=2[CH:3]=1.[F:12][C:13]1[CH:14]=[C:15]([N+:20]([O-:22])=[O:21])[CH:16]=[CH:17][C:18]=1F.C(=O)([O-])[O-].[K+].[K+]>CN(C=O)C.O>[F:12][C:13]1[CH:14]=[C:15]([N+:20]([O-:22])=[O:21])[CH:16]=[CH:17][C:18]=1[O:10][C:9]1[CH:8]=[CH:7][N:6]=[C:5]2[NH:11][C:2]([CH3:1])=[CH:3][C:4]=12

Participants

6

Reactant 3

HCID 11430Potassium CarbonateHCID 1230531,2-Difluoro-4-nitrobenzeneHCID 178422234HCID 178422234, compound

Product 1

HCID 210816374-(2-Fluoro-4-nitrophenoxy)-2-methyl-1H-pyrrolo[2,3-b]pyridineYield 46%

Reagents, catalysts & solvents 2

HCID 962WaterSolventHCID 6228DimethylformamideSolvent

Conditions

Temperature
50 °C

Procedure

A mixture of 2-methyl-1H-pyrrolo[2,3-b]pyridin-4-ol (90 mg, TFA salt, 0.34 mmol), 3,4-difluoronitrobenzene (0.05 mL) and potassium carbonate (100 mg, 0.72 mmol) in DMF (1 mL) was stirred at 50° C. for 2 h. The mixture was diluted with water and extracted with ethyl acetate (3×5 mL). The combined extracts were washed with water, dried (MgSO4) and concentrated in vacuo to afford the crude product, which was purified by preparative HPLC to give the title compound (45 mg, 46%). 1H NMR (CD3OD) δ 8.25 (dd, 2H, J=10.4, 2.6 Hz), 8.12 (m, 1H), 8.04 (d, 1H, J=5.5 Hz), 7.30 (t, 1H, J=8.3 Hz), 6.67 (d, 1H, J=5.5 Hz), 5.95 (s, 1H), 2.41 (s, 3H); MS(ESI+) m/z 288 (M+H)+.

Workup

  1. extractionextracted with ethyl acetate (3×5 mL)
  2. washThe combined extracts were washed with water
  3. dry with materialdried (MgSO4)
  4. concentrationconcentrated in vacuo
  5. customto afford the crude product, which
  6. customwas purified by preparative HPLC

Sources & evidence

ORD record
ord-251d103fdcd14913a8fff803fe5553b3
Source dataset
uspto-grants-2008_10
Patent number
US07439246B2

Reaction notes

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