Dimethyl Sulfoxide → HCID 57464094, compound

HRID 1623152Notes

Reaction equation

HRID 1623152 reaction equation
CS(C)=O.C(Cl)(=O)C(Cl)=O.[CH2:11]([C:15]1[N:16]([CH2:28][CH2:29][CH2:30][CH2:31][OH:32])[C:17]2[C:26]3[CH:25]=[CH:24][CH:23]=[CH:22][C:21]=3[N:20]=[CH:19][C:18]=2[N:27]=1)[CH2:12][CH2:13][CH3:14].C(N(CC)CC)C>ClCCl.C(Cl)(Cl)Cl>[CH2:11]([C:15]1[N:16]([CH2:28][CH2:29][CH2:30][CH:31]=[O:32])[C:17]2[C:26]3[CH:25]=[CH:24][CH:23]=[CH:22][C:21]=3[N:20]=[CH:19][C:18]=2[N:27]=1)[CH2:12][CH2:13][CH3:14]

Participants

7

Reactant 4

HCID 679Dimethyl SulfoxideHCID 8471TriethylamineHCID 65578Oxalyl chlorideHCID 57455399HCID 57455399, compound

Product 1

HCID 57464094HCID 57464094, compoundYield 90%

Reagents, catalysts & solvents 2

HCID 6212ChloroformSolventHCID 6344DichloromethaneSolvent2×

Procedure

A solution of dimethyl sulfoxide (DMSO, 7.88 g, 101 mmol) in dichloromethane (130 mL) was cooled in a dry ice/acetone bath and stirred. Oxalyl chloride (9.40 g, 74 mmol) was added dropwise, followed by a solution of 4-(2-butyl-1H-imidazo[4,5-c]quinolin-1-yl)butan-1-ol (20.0 g, 67.3 mmol) in dichloromethane (320 mL). After five minutes triethylamine (20.42 g, 202 mmol) was added, and the mixture was allowed to warm to room temperature. After the addition of chloroform (500 mL), the mixture was washed successively with a saturated ammonium chloride solution (200 mL) and a saturated aqueous sodium bicarbonate solution (200 mL), dried over sodium sulfate, filtered, and concentrated to a dark solid. This solid was slurried in diethyl ether until a fine solid resulted. The product was filtered and dried to provide 4-(2-butyl-1H-imidazo[4,5-c]quinolin-1-yl)butyraldehyde (17.9 g) as a light brown solid.

Workup

  1. washthe mixture was washed successively with a saturated ammonium chloride solution (200 mL)
  2. dry with materiala saturated aqueous sodium bicarbonate solution (200 mL), dried over sodium sulfate
  3. filtrationfiltered
  4. concentrationconcentrated to a dark solid
  5. customresulted
  6. filtrationThe product was filtered
  7. customdried

Sources & evidence

ORD record
ord-dd0cff149e734620be78cdced9e102db
Source dataset
uspto-grants-2014_07
Patent number
US08778963B2

Reaction notes

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