Hydrochloric Acid → HCID 22738749, Verbindung

HRID 51416Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 51416
[Cl:1][C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][C:3]=1[CH2:8][N:9]1[C:21]2[CH:20]=[CH:19][CH:18]=[C:17]([OH:22])[C:16]=2[C:15]2[C:10]1=[CH:11][CH:12]=[CH:13][C:14]=2[C:23]([O:25]C)=O.Cl.[OH-].[NH4+:29]>C1COCC1.C(OCC)(=O)C>[Cl:1][C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][C:3]=1[CH2:8][N:9]1[C:21]2[CH:20]=[CH:19][CH:18]=[C:17]([OH:22])[C:16]=2[C:15]2[C:10]1=[CH:11][CH:12]=[CH:13][C:14]=2[C:23](=[O:25])[NH2:29]

Komponenten

6

Edukt 3

HCID 313Hydrochloric AcidHCID 14923Ammonium HydroxideHCID 227388479-[(2-Chlorophenyl)methyl]-4-hydroxy-5-carbomethoxy carbazole

Produkt 1

HCID 22738749HCID 22738749, VerbindungAusbeute 38 %

Reagenzien, Katalysatoren, Lösungsmittel 2

HCID 8028TetrahydrofuranLösungsmittelHCID 8857Ethyl AcetateLösungsmittel

Versuchsvorschrift

A solution of the 9-[(2-chlorophenyl)methyl]-4-hydroxy-5-carbomethoxy carbazole (238 mg, 0.43 mM) in 20 mL THF and 25 mL concentrated aqueous ammonium hydroxide was sonicated for 20 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 gradient methylene chloride/ethyl acetate) to afford 86.9 mg (38%) of the 9-[(2-chlorophenyl)methyl]-4-hydroxy-5-carbamoyl carbazole as a white solid. 1H NMR (DMSO-d6) δ10.5 (s, 1H), 8.8 (br s, 1H), 8.4 (br s, 1H), 7.7 (m, 1H), 7.55 (d, 1H, J=8 Hz), 7.45 (m, 2H), 7.3 (m, 2H), 7.15 (t, 1H, J=8 Hz), 6.95 (d, 1H, J=8 Hz), 6.6 (d, 1H, J=8 Hz), 6.2 (d, 1H, J=8 Hz), 5.75 (s, 2H). IR (CHCl3, cm−1) 3500, 3400, 3200 (br), 1649, 1597, 1585, 1446, 1431, 1331, and 1269. MS (ES) m/e 349, 351, 353.

Aufarbeitung

  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 gradient methylene chloride/ethyl acetate)

Quellen und Nachweise

ORD-Eintrag
ord-ac8601bbc0df459286da622472697155
Quelldatensatz
uspto-grants-2004_03
Patentnummer
US06713645B1

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