Trimethyl orthovalerate → 2-butyl-1-(3-methylsulfanylpropyl)-7-phenyl-1H-imidazo[4,5-c]quinoline

HRID 9365

Reaction equation

HRID 9365 reaction equation
[CH3:1][S:2][CH2:3][CH2:4][CH2:5][NH:6][C:7]1[C:16]2[C:11](=[CH:12][C:13]([C:17]3[CH:22]=[CH:21][CH:20]=[CH:19][CH:18]=3)=[CH:14][CH:15]=2)[N:10]=[CH:9][C:8]=1[NH2:23].[C:24](OC)(OC)(OC)[CH2:25][CH2:26][CH2:27][CH3:28].Cl.N1C=CC=CC=1>C1(C)C=CC=CC=1>[CH2:25]([C:24]1[N:6]([CH2:5][CH2:4][CH2:3][S:2][CH3:1])[C:7]2[C:16]3[CH:15]=[CH:14][C:13]([C:17]4[CH:22]=[CH:21][CH:20]=[CH:19][CH:18]=4)=[CH:12][C:11]=3[N:10]=[CH:9][C:8]=2[N:23]=1)[CH2:26][CH2:27][CH3:28]

Participants

5

Reactant 3

HCID 83755Trimethyl orthovalerateHCID 10176127Pyridinium chlorideHCID 86593757N4-(3-methylsulfanylpropyl)-7-phenylquinoline-3,4-diamine

Product 1

HCID 219844302-butyl-1-(3-methylsulfanylpropyl)-7-phenyl-1H-imidazo[4,5-c]quinolineYield 90.7%

Reagents, catalysts & solvents 1

HCID 1140TolueneSolvent

Procedure

N4-(3-Methylsulfanylpropyl)-7-phenylquinoline-3,4-diamine (2.75 g, 8.49 mmol), trimethyl orthovalerate (1.7 g, 10 mmol), and pyridine hydrochloride (0.3 g) were dissolved in toluene (28 mL) and heated to reflux for 1.5 h, collecting the volatiles in a Dean—Stark trap. Upon cooling to room temperature, the solvent was removed under vacuum. The resulting solid was slurried in hexanes (100 mL) for 1 h and then collected by filtration to afford 3.0 g of 2-butyl-1-(3-methylsulfanylpropyl)-7-phenyl-1H-imidazo[4,5-c]quinoline.

Workup

  1. temperatureheated
  2. temperatureto reflux for 1.5 h
  3. customcollecting the volatiles in a Dean—Stark trap
  4. customthe solvent was removed under vacuum
  5. filtrationcollected by filtration

Sources & evidence

ORD record
ord-db8fbeb70dec4320954face4762c20da
Source dataset
uspto-grants-2006_08
Patent number
US07091214B2

Linked notes

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