Methyl bromoacetate → {9-[(3,5-Dimethylphenyl)methyl]-5-carbamoylcarbazol-4-yl}oxyacetic acid, methyl ester

HRID 567318Notes

Reaction equation

HRID 567318 reaction equation
[CH3:1][C:2]1[CH:3]=[C:4]([CH2:9][N:10]2[C:22]3[CH:21]=[CH:20][CH:19]=[C:18]([OH:23])[C:17]=3[C:16]3[C:11]2=[CH:12][CH:13]=[CH:14][C:15]=3[C:24](=[O:26])[NH2:25])[CH:5]=[C:6]([CH3:8])[CH:7]=1.Br[CH2:28][C:29]([O:31][CH3:32])=[O:30]>CN(C=O)C.C(OCC)(=O)C>[CH3:1][C:2]1[CH:3]=[C:4]([CH2:9][N:10]2[C:22]3[CH:21]=[CH:20][CH:19]=[C:18]([O:23][CH2:28][C:29]([O:31][CH3:32])=[O:30])[C:17]=3[C:16]3[C:11]2=[CH:12][CH:13]=[CH:14][C:15]=3[C:24](=[O:26])[NH2:25])[CH:5]=[C:6]([CH3:8])[CH:7]=1

Participants

5

Reactant 2

HCID 60984Methyl bromoacetateHCID 227390959-[(3,5-Dimethylphenyl)methyl]-4-hydroxy-5-carbamoyl carbazole

Product 1

HCID 86756272{9-[(3,5-Dimethylphenyl)methyl]-5-carbamoylcarbazol-4-yl}oxyacetic acid, methyl esterYield 72.4%

Reagents, catalysts & solvents 2

HCID 6228DimethylformamideSolventHCID 8857Ethyl AcetateSolvent

Procedure

40% Methanolic Triton B (0.13 mL, 0.28 mM) was added to a solution of the 9-[(3,5-dimethylphenyl)methyl]-4-hydroxy-5-carbamoyl carbazole (80 mg, 0.23 mM) in 8 mL DMF at room temperature. After 3 minutes, methyl bromoacetate (43 mg, 0.28 mM) was added and the resultant mixture stirred at room temperature for 17 hours. The mixture was diluted with ethyl acetate, washed with H2O, and saturated brine, dried over magnesium sulfate, filtered, and concentrated. The residue was purified by column chromatography on silica gel (elution with ethyl acetate) to afford 70 mg (72%) of the {9-[(3,5-dimethylphenyl)methyl]-5-carbamoylcarbazol-4-yl}oxyacetic acid, methyl ester as a white solid. 1H NMR (DMSO-d6) δ 7.6 (d, 1H, J=8 Hz), 7.55 (br s, 1H), 7.45-7.3 (m, 2H), 7.25 (d, 1H, J=8 Hz), 7.2 (br s, 1H), 7.1 (d, 1H, J=8 Hz), 6.9 (s, 1H), 6.8 (s, 2H), 6.6 (d, 1H, J=8 Hz), 5.65 (s, 2H), 4.9 (s, 2H), 3.75 (s, 3H), and 2.2 (s, 6H). IR (KBr, cm−1) 3362, 3173, 1758, 1638, 1583, 1500, 1454, 1434, 1330, 1215, 1151, 1106, 772, 715, and 706. MS (FD) m/e 417.

Workup

  1. washwashed with H2O, and saturated brine
  2. dry with materialdried over magnesium sulfate
  3. filtrationfiltered
  4. concentrationconcentrated
  5. customThe residue was purified by column chromatography on silica gel (elution with ethyl acetate)

Sources & evidence

ORD record
ord-33179055711e41fc9b5ee7dab8c69a7a
Source dataset
uspto-grants-2001_01
Patent number
US06177440B1

Reaction notes

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