Ethanol → HCID 67260349, compound

HRID 907859Notes

Reaction equation

HRID 907859 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[CH:24]=[CH:23][N:22]=[C:21]1[CH:25]=O.[O-:27][CH2:28][CH3:29].[Na+].C(O)C>C(OCC)(=O)CC>[CH3:19][N:20]1[CH:24]=[CH:23][N:22]=[C:21]1[CH:25]1[C:28](=[O:27])[C:29]2[C:14]([C:13]([O:12][CH2:11][CH3:10])=[O:18])=[CH:15][CH:16]=[CH:17][C:9]=2[NH:8][CH:1]1[C:2]1[CH:3]=[CH:4][CH:5]=[CH:6][CH:7]=1

Participants

6

Reactant 4

HCID 702EthanolHCID 1395751-Methyl-2-imidazolecarboxaldehydeHCID 2723922Sodium ethoxideHCID 178519069HCID 178519069, compound

Product 1

HCID 67260349HCID 67260349, compoundYield 18%

Reagents, catalysts & solvents 1

HCID 7749Ethyl PropionateSolvent

Conditions

Temperature
0 °C

Procedure

A mixture of (E)-4-(benzylideneamino)isobenzofuran-1(3H)-one (500 mg, 2.1 mmol) and 1-methyl-1H-imidazole-2-carbaldehyde (255 mg, 2.3 mmol) in ethyl propionate (20 mL) was cooled to 0° C. Then a solution of sodium ethoxide in ethanol [sodium (194 mg, 8.4 mmol) in ethanol (10 mL)] was added dropwise. After the addition, the mixture was stirred at room temperature for 2.5 hr. The mixture was quenched with water (20 mL) and solvent was removed in vacuum. The residue was dissolved in water, and filtered; the cake was washed by water, then ethyl acetate to obtain ethyl 3-(1-methyl-1H-imidazol-2-yl)-4-oxo-2-phenyl-1,2,3,4-tetrahydroquinoline-5-carboxylate as a yellow solid. The solid was dried in vacuum at 50° C. (140 mg, yield 18%). 1H-NMR (400 MHz, DMSO-d6) δ (ppm): 1.18-1.21 (t, J=7.2 Hz, 3H), 3.31 (s, 3H), 4.16-4.19 (m, 2H), 4.56-4.59 (d, J=13.2 Hz, 1H), 5.14-5.17 (d, J=13.2 Hz, 1H), 6.54-6.56 (d, J=7.2 Hz, 1H), 6.72 (s, 1H), 6.86 (s, 1H), 6.98-6.99 (d, J=4.8 Hz, 1H), 7.24-7.29 (m, 3H), 7.34-7.38 (t, J=8.0 Hz, 1H), 7.42-7.44 (d, J=7.2 Hz, 2H), 7.49 (s, 1H); LC-MS (ESI) m/z: 376 (M+1)+.

Workup

  1. additionAfter the addition
  2. customThe mixture was quenched with water (20 mL) and solvent
  3. customwas removed in vacuum
  4. dissolutionThe residue was dissolved in water
  5. filtrationfiltered
  6. washthe cake was washed by water

Sources & evidence

ORD record
ord-fbbad9ef79664c0a9dd616673b3c2fe4
Source dataset
uspto-grants-2011_09
Patent number
US08012976B2

Reaction notes

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