Ethyl Acetate → 6-[2-Methoxy-4-(6-methylpyridin-3-ylcarbonyloxy)phenyl]-5-(5-methylthiophen-2-ylcarbonyloxymethyl)-2,2,4-trimethyl-1,2-dihydroquinoline

HRID 1678277Notes

Reaction equation

HRID 1678277 reaction equation
[OH:1][C:2]1[CH:7]=[CH:6][C:5]([C:8]2[C:9]([CH2:21][O:22][C:23]([C:25]3[S:26][C:27]([CH3:30])=[CH:28][CH:29]=3)=[O:24])=[C:10]3[C:15](=[CH:16][CH:17]=2)[NH:14][C:13]([CH3:19])([CH3:18])[CH:12]=[C:11]3[CH3:20])=[C:4]([O:31][CH3:32])[CH:3]=1.[CH3:33][C:34]1[CH:42]=[CH:41][C:37]([C:38](O)=[O:39])=[CH:36][N:35]=1.C(N(CC)C(C)C)(C)C.C(OCC)(=O)C>CN(C)C=O>[CH3:32][O:31][C:4]1[CH:3]=[C:2]([O:1][C:38]([C:37]2[CH:36]=[N:35][C:34]([CH3:33])=[CH:42][CH:41]=2)=[O:39])[CH:7]=[CH:6][C:5]=1[C:8]1[C:9]([CH2:21][O:22][C:23]([C:25]2[S:26][C:27]([CH3:30])=[CH:28][CH:29]=2)=[O:24])=[C:10]2[C:15](=[CH:16][CH:17]=1)[NH:14][C:13]([CH3:18])([CH3:19])[CH:12]=[C:11]2[CH3:20]

Participants

6

Reactant 4

HCID 8857Ethyl AcetateHCID 81531DiisopropylethylamineHCID 1378606-Methylnicotinic acidHCID 250156246-(4-Hydroxy-2-methoxyphenyl)-5-(5-methylthiophen-2-ylcarbonyloxymethyl)-2,2,4-trimethyl-1,2-dihydroquinoline

Product 1

HCID 248913366-[2-Methoxy-4-(6-methylpyridin-3-ylcarbonyloxy)phenyl]-5-(5-methylthiophen-2-ylcarbonyloxymethyl)-2,2,4-trimethyl-1,2-dihydroquinolineYield 57%

Reagents, catalysts & solvents 1

HCID 6228DimethylformamideSolvent

Procedure

6-(4-Hydroxy-2-methoxyphenyl)-5-(5-methylthiophen-2-ylcarbonyloxymethyl)-2,2,4-trimethyl-1,2-dihydroquinoline (Reference Compound No. 3-2, 32.5 mg, 0.0723 mmol) and 6-methylnicotinic acid (15.7 mg, 0.114 mmol) were dissolved in N,N-dimethylformamide (1 mL), N,N-diisopropylethylamine (35 μL, 0.201 mmol) and O-(7-azabenzotriazol-1-yl)-N,N,N,N-tetramethyluronium hexafluorophosphate (38.3 mg, 0.101 mmol) were added thereto, and then the mixture was stirred at room temperature overnight. Ethyl acetate (20 mL) was added to the reaction mixture, and then the mixture was washed with water (20 mL) and saturated brine (20 mL) successively. After the organic layer was dried over anhydrous magnesium sulfate, the solvent was removed under reduced pressure. The obtained residue was purified by silica gel column chromatography (hexane-ethyl acetate) to give the titled compound (21.5 mg) as a gray amorphous product. (Yield 57%)

Workup

  1. washthe mixture was washed with water (20 mL) and saturated brine (20 mL) successively
  2. dry with materialAfter the organic layer was dried over anhydrous magnesium sulfate
  3. customthe solvent was removed under reduced pressure
  4. customThe obtained residue was purified by silica gel column chromatography (hexane-ethyl acetate)

Sources & evidence

ORD record
ord-11d30019913444d59dbcd12fa67643fe
Source dataset
uspto-grants-2011_08
Patent number
US08008497B2

Reaction notes

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