Imidazole → HCID 86680626, compound

HRID 1497456Notes

Reaction equation

HRID 1497456 reaction equation
[NH:1]1[CH:5]=[CH:4][N:3]=[CH:2]1.Br[CH:7]([C:9]1[CH:14]=[CH:13][C:12]([C:15]2[CH:20]=[CH:19][C:18]([N+:21]([O-:23])=[O:22])=[CH:17][CH:16]=2)=[CH:11][N:10]=1)[CH3:8].C([O-])([O-])=O.[K+].[K+]>CN(C=O)C.O>[N:1]1([CH:7]([C:9]2[CH:14]=[CH:13][C:12]([C:15]3[CH:20]=[CH:19][C:18]([N+:21]([O-:23])=[O:22])=[CH:17][CH:16]=3)=[CH:11][N:10]=2)[CH3:8])[CH:5]=[CH:4][N:3]=[CH:2]1

Participants

6

Reactant 3

HCID 795ImidazoleHCID 11430Potassium CarbonateHCID 86680625HCID 86680625, compound

Product 1

HCID 86680626HCID 86680626, compound

Reagents, catalysts & solvents 2

HCID 962WaterSolventHCID 6228DimethylformamideSolvent

Conditions

Temperature
50 °C

Procedure

To a stirred solution of 1H-imidazole (13 mg, 0.19 mmol) in DMF (2 mL) was added 2-(1-bromoethyl)-5-(4-nitrophenyl)pyridine (50 mg, 0.1 mmol) and K2CO3. The reaction was heated at 50° C. for about 1 h. The reaction mixture was diluted with water (20 mL) and extracted with ethyl acetate (2×100 mL). The combined organic extracts were washed with brine solution (10 mL), organic layer was dried over Na2SO4 and concentrated under vacuum to obtain crude product. The crude product was purified by flash chromatography (silica gel, 100-200μ) using 2% methanol in DCM eluent to afford 2-(1-(1H-imidazol-1-yl)ethyl)-5-(4-nitrophenyl)pyridine as off white solid (50 mg, 58% yield). 1H NMR (400 MHz, DMSO-d6): δ 8.97 (s, 1H), 8.31 (d, 2H), 8.22 (dd, 1H), 8.01 (d, 2H), 7.82 (s, 1H), 7.30 (t, 2H), 6.91 (s, 1H), 5.71-5.65 (m, 1H), 1.84 (d, 3H), LC-MS m/z calcd for [M+H]+ 295.11. found 295.4.

Workup

  1. extractionextracted with ethyl acetate (2×100 mL)
  2. washThe combined organic extracts were washed with brine solution (10 mL), organic layer
  3. dry with materialwas dried over Na2SO4
  4. concentrationconcentrated under vacuum
  5. customto obtain crude product
  6. customThe crude product was purified by flash chromatography (silica gel, 100-200μ)

Sources & evidence

ORD record
ord-1b90282cecba49b69f38baaab0f040fb
Source dataset
uspto-grants-2015_12
Patent number
US09199975B2

Reaction notes

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