Pyridinium chloride → 2-hexyl-1-[5-(methylthio)pentyl]-1H-imidazo[4,5-c]quinoline

HRID 897190Notes

Reaction equation

HRID 897190 reaction equation
[CH3:1][S:2][CH2:3][CH2:4][CH2:5][CH2:6][CH2:7][NH:8][C:9]1[C:18]2[C:13](=[CH:14][CH:15]=[CH:16][CH:17]=2)[N:12]=[CH:11][C:10]=1[NH:19][C:20](=O)[CH2:21][CH2:22][CH2:23][CH2:24][CH2:25][CH3:26].Cl.N1C=CC=CC=1>N1C=CC=CC=1>[CH2:21]([C:20]1[N:8]([CH2:7][CH2:6][CH2:5][CH2:4][CH2:3][S:2][CH3:1])[C:9]2[C:18]3[CH:17]=[CH:16][CH:15]=[CH:14][C:13]=3[N:12]=[CH:11][C:10]=2[N:19]=1)[CH2:22][CH2:23][CH2:24][CH2:25][CH3:26]

Participants

4

Reactant 2

HCID 10176127Pyridinium chlorideHCID 22320422N-(4-[{5-(methylthio)pentyl]amino}quinolin-3-yl)heptanamide

Product 1

HCID 223205532-hexyl-1-[5-(methylthio)pentyl]-1H-imidazo[4,5-c]quinolineYield 94.4%

Reagents, catalysts & solvents 1

HCID 1049PyridineSolvent

Procedure

A round bottom flask was charged with a magnetic stir bar, N-(4-{[5-(methylthio)pentyl]amino}quinolin-3-yl)heptanamide (4.44 g, 11.46 mmol), pyridine hydrochloride (0.13 g, 1.15 mmol), and anhydrous pyridine (50 mL) under a nitrogen atmosphere. The reaction was judged to be complete after stirring at reflux for 1.5 hours. The solution was cooled and partitioned between ethyl acetate and water. The layers were separated. The organic layer was washed with saturated aqueous sodium bicarbonate and brine, dried over anhydrous sodium sulfate, filtered and then concentrated under reduced pressure to afford 2-hexyl-1-[5-(methylthio)pentyl]-1H-imidazo[4,5-c]quinoline (4.0 g, 10.82 mmol) as a brown oil which was used without further purification.

Workup

  1. additionA round bottom flask was charged with a magnetic stir bar
  2. temperatureat reflux for 1.5 hours
  3. temperatureThe solution was cooled
  4. custompartitioned between ethyl acetate and water
  5. customThe layers were separated
  6. washThe organic layer was washed with saturated aqueous sodium bicarbonate and brine
  7. dry with materialdried over anhydrous sodium sulfate
  8. filtrationfiltered
  9. concentrationconcentrated under reduced pressure

Sources & evidence

ORD record
ord-ae7042100a1e48629aeae24f8db26d64
Source dataset
uspto-grants-2005_07
Patent number
US06921826B2

Reaction notes

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