Hydrochloric Acid → 9-[(2-Trifluoromethylphenyl)methyl]-4-hydroxy-5-carbamoyl carbazole

HRID 51376ノート

反応式

HRID 51376 の反応式
[F:1][C:2]([F:29])([F:28])[C:3]1[CH:8]=[CH:7][CH:6]=[CH:5][C:4]=1[CH2:9][N:10]1[C:22]2[CH:21]=[CH:20][CH:19]=[C:18]([OH:23])[C:17]=2[C:16]2[C:11]1=[CH:12][CH:13]=[CH:14][C:15]=2[C:24](OC)=[O:25].Cl.[OH-].[NH4+:32]>C1COCC1.C(OCC)(=O)C>[F:1][C:2]([F:29])([F:28])[C:3]1[CH:8]=[CH:7][CH:6]=[CH:5][C:4]=1[CH2:9][N:10]1[C:22]2[CH:21]=[CH:20][CH:19]=[C:18]([OH:23])[C:17]=2[C:16]2[C:11]1=[CH:12][CH:13]=[CH:14][C:15]=2[C:24](=[O:25])[NH2:32]

参加物

6

反応物 3

HCID 313Hydrochloric AcidHCID 14923Ammonium HydroxideHCID 22738792HCID 22738792、化合物

生成物 1

HCID 227398039-[(2-Trifluoromethylphenyl)methyl]-4-hydroxy-5-carbamoyl carbazole収率 49%

試薬・触媒・溶媒 2

HCID 8028Tetrahydrofuran溶媒HCID 8857Ethyl Acetate溶媒

実験手順

A solution of the 9-[(2-trifluoromethylphenyl)methyl]-4-hydroxy-5-carbomethoxy carbazole (310 mg, 0.77 mM) in 5 mL THF and 20 mL concentrated aqueous ammonium hydroxide was sonicated for 25 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 145 mg (49%) of the 9-[(2-trifluoromethylphenyl)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), 7.8 (d, 1H, J=8 Hz), 7.6-7.2 (m, 6H), 6.85 (d, 1H, J=8 Hz), 6.6 (d, 1H, J=8 Hz), 6.25 (d, 1H, J=8 Hz), and 5.8 (s, 2H). IR (KBr, cm−1) 3460, 3360, and 1589. MS (ES) m/e 383, 385.

後処理

  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)

出典と根拠

ORDレコード
ord-0956e649093d4a059452b25e3792cb00
出典データセット
uspto-grants-2004_03
特許番号
US06713645B1

反応ノート

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