Iodobenzene → 2-(ethoxymethyl)-1-{2-[(3-phenylprop-2-ynyl)oxy]ethyl}-1H-imidazo[4,5-c]quinoline
Reaction equation
[CH2:1]([O:3][CH2:4][C:5]1[N:6]([CH2:18][CH2:19][O:20][CH2:21][C:22]#[CH:23])[C:7]2[C:16]3[CH:15]=[CH:14][CH:13]=[CH:12][C:11]=3[N:10]=[CH:9][C:8]=2[N:17]=1)[CH3:2].I[C:25]1[CH:30]=[CH:29][CH:28]=[CH:27][CH:26]=1>>[CH2:1]([O:3][CH2:4][C:5]1[N:6]([CH2:18][CH2:19][O:20][CH2:21][C:22]#[C:23][C:25]2[CH:30]=[CH:29][CH:28]=[CH:27][CH:26]=2)[C:7]2[C:16]3[CH:15]=[CH:14][CH:13]=[CH:12][C:11]=3[N:10]=[CH:9][C:8]=2[N:17]=1)[CH3:2]Participants
Procedure
Using the general method of Example 12 Part A, 2-(ethoxymethyl)-1-[2-(prop-2-ynyloxy)ethyl]-1H-imidazo[4,5-c]quinoline (1.5 g, 4.13 mmol) was reacted with iodobenzene (0.51 mL, 4.54 mmol) at 40° C. After 50 minutes the reaction was judged complete. The volatiles were removed under reduced pressure and the resulting oil was partitioned between dichloromethane and 5% aqueous sodium bicarbonate. The aqueous layer was extracted with dichloromethane. The organic fractions were combined, washed with brine, dried with anhydrous sodium sulfate, and then concentrated under reduced pressure to leave a brown oil. The oil was purified by chromatography over silica gel (98/2 dichloromethane/methanol) to provide 1.25 g of 2-(ethoxymethyl)-1-{2-[(3-phenylprop-2-ynyl)oxy]ethyl}-1H-imidazo[4,5-c]quinoline as a brown glassy solid.
Workup
- customThe volatiles were removed under reduced pressure
- customthe resulting oil was partitioned between dichloromethane and 5% aqueous sodium bicarbonate
- extractionThe aqueous layer was extracted with dichloromethane
- washwashed with brine
- dry with materialdried with anhydrous sodium sulfate
- concentrationconcentrated under reduced pressure
- customto leave a brown oil
- customThe oil was purified by chromatography over silica gel (98/2 dichloromethane/methanol)
Sources & evidence
- ORD record
- ord-e317ba08dc2041fea0c107c49531b6cb
- Source dataset
- uspto-grants-2003_12
- Patent number
- US06670372B2
Reaction notes
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