Hydrochloric Acid → HCID 22739818, compound

HRID 567290Notes

Reaction equation

HRID 567290 reaction equation
[CH2:1]([C:8]1[CH:13]=[CH:12][CH:11]=[CH:10][C:9]=1[CH2:14][N:15]1[C:27]2[CH:26]=[CH:25][CH:24]=[C:23]([OH:28])[C:22]=2[C:21]2[C:16]1=[CH:17][CH:18]=[CH:19][C:20]=2[C:29]([O:31]C)=O)[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1.Cl.[OH-].[NH4+:35]>C1COCC1.C(OCC)(=O)C>[CH2:1]([C:8]1[CH:13]=[CH:12][CH:11]=[CH:10][C:9]=1[CH2:14][N:15]1[C:27]2[CH:26]=[CH:25][CH:24]=[C:23]([OH:28])[C:22]=2[C:21]2[C:16]1=[CH:17][CH:18]=[CH:19][C:20]=2[C:29](=[O:31])[NH2:35])[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1

Participants

6

Reactant 3

HCID 313Hydrochloric AcidHCID 14923Ammonium HydroxideHCID 227392779-[(2-Benzylphenyl)methyl]-4-hydroxy-5-carbomethoxy carbazole

Product 1

HCID 22739818HCID 22739818, compoundYield 44%

Reagents, catalysts & solvents 2

HCID 8028TetrahydrofuranSolventHCID 8857Ethyl AcetateSolvent

Procedure

A solution of the 9-[(2-benzylphenyl)methyl]-4-hydroxy-5-carbomethoxy carbazole (166 mg, 0.39 mM) in 8 mL THF and 30 mL concentrated aqueous ammonium hydroxide was sonicated for 30 hours at 40-50° C. The mixture was diluted with ethyl acetate and acidified to pH 1 with 5 N HCl. The aqueous layer was extracted twice with ethyl acetate. The combined organic extracts were washed with 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 (44%) of the 9-[(2-benzylphenyl)methyl]-4-hydroxy-5-carbamoyl carbazole as a white solid. 1H NMR (CDCl3) δ 8.0 (d, 1H, J=8 Hz), 7.4-7.0 (m, 12H), 6.8 (d, 1H, J=8 Hz), 6.6 (d, 1H, J=8 Hz), 6.5 (m, 1H), 6.4 (m, 1H), 5.8 (s, 1H), 5.4 (s, 2H), and 4.2 (s, 2H). MS (ES) m/e 405, 407.

Workup

  1. extractionThe aqueous layer was extracted twice with ethyl acetate
  2. washThe combined organic extracts were washed with saturated brine
  3. dry with materialdried over magnesium sulfate
  4. filtrationfiltered
  5. concentrationconcentrated
  6. customThe residue was purified by column chromatography on silica gel (elution with ethyl acetate)

Sources & evidence

ORD record
ord-cf8af7ecca1c47c8b99b0a20b2c8ad43
Source dataset
uspto-grants-2001_01
Patent number
US06177440B1

Reaction notes

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