Ethanol → HCID 67260618, compound

HRID 1967988Notes

Reaction equation

HRID 1967988 reaction equation
[CH:1](=[N:8]/[C:9]1[CH:17]=[CH:16][CH:15]=[C:14]2[C:10]=1[CH2:11][O:12][C:13]2=[O:18])\[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1.[CH3:19][N:20]1[C:24]([CH:25]=O)=[CH:23][N:22]=[CH:21]1.[O-:27][CH2:28][CH3:29].[Na+].C(O)C>C(OCC)(=O)CC>[CH3:19][N:20]1[C:24]([CH:25]2[C:28](=[O:27])[C:29]3[C:14]([C:13]([O:12][CH2:11][CH3:10])=[O:18])=[CH:15][CH:16]=[CH:17][C:9]=3[NH:8][CH:1]2[C:2]2[CH:3]=[CH:4][CH:5]=[CH:6][CH:7]=2)=[CH:23][N:22]=[CH:21]1

Participants

6

Reactant 4

HCID 702EthanolHCID 5735921-methyl-1H-imidazole-5-carbaldehydeHCID 2723922Sodium ethoxideHCID 178519069HCID 178519069, compound

Product 1

HCID 67260618HCID 67260618, compoundYield 23%

Reagents, catalysts & solvents 1

HCID 7749Ethyl PropionateSolvent

Conditions

Temperature
0 °C

Procedure

A mixture of (E)-4-(benzylideneamino) isobenzofuran-1(3H)-one (474 mg, 2 mmol) and 1-methyl-1H-imidazole-5-carbaldehyde (220 mg, 2 mmol) in ethyl propionate (20 mL) was cooled to 0° C. Then a solution of sodium ethoxide in ethanol [sodium (184 mg, 8 mmol) in ethanol (10 mL)] was added dropwise. After the addition, the mixture was stirred at room temperature for 3 hr. The mixture was quenched with water (10 mL) and solvent was removed in vacuum. The residue was dissolved in water, and then extracted with ethyl acetate (100 mL×4). The combined organic layers were washed with brine, dried over anhydrous sodium sulfate, and concentrated to give crude product. The crude product was purified by chromatography (silica gel, petroleum ether/ethyl acetate=5:1 to 3:7) to give ethyl 3-(1-methyl-1H-imidazol-5-yl)-4-oxo-2-phenyl-1,2,3,4-tetrahydroquinoline-5-carboxylate (170 mg, yield 23%). LC-MS (ESI) m/z: 376 (M+1)+.

Workup

  1. additionAfter the addition
  2. customThe mixture was quenched with water (10 mL) and solvent
  3. customwas removed in vacuum
  4. dissolutionThe residue was dissolved in water
  5. extractionextracted with ethyl acetate (100 mL×4)
  6. washThe combined organic layers were washed with brine
  7. dry with materialdried over anhydrous sodium sulfate
  8. concentrationconcentrated
  9. customto give crude product
  10. customThe crude product was purified by chromatography (silica gel, petroleum ether/ethyl acetate=5:1 to 3:7)

Sources & evidence

ORD record
ord-1b5179bb564643b386d15c5a6303ecc1
Source dataset
uspto-grants-2013_04
Patent number
US08420650B2

Reaction notes

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