Potassium Carbonate → 10-bromo-2-(2-oxopentyloxy)-4H-pyrido [3,2,1-jk]carbazole-4-one

HRID 850772ノート

反応式

HRID 850772 の反応式
[Br:1][C:2]1[CH:3]=[CH:4][C:5]2[N:6]3[CH:18]=[CH:17][C:16](=[O:19])[C:8]4[CH:9]=[C:10]([OH:15])[CH:11]=[C:12]([C:13]=2[CH:14]=1)[C:7]3=4.C(=O)([O-])[O-].[K+].[K+].Br[CH2:27][C:28](=[O:32])[CH2:29][CH2:30][CH3:31]>CS(C)=O>[Br:1][C:2]1[CH:3]=[CH:4][C:5]2[N:6]3[CH:18]=[CH:17][C:16](=[O:19])[C:8]4[CH:9]=[C:10]([O:15][CH2:27][C:28](=[O:32])[CH2:29][CH2:30][CH3:31])[CH:11]=[C:12]([C:13]=2[CH:14]=1)[C:7]3=4

参加物

5

反応物 3

HCID 11430Potassium CarbonateHCID 100578691-Bromopentan-2-oneHCID 2125288410-bromo-2-hydroxy-4H-pyrido[3,2,1-jk]carbazole-4-one

生成物 1

HCID 1936487310-bromo-2-(2-oxopentyloxy)-4H-pyrido [3,2,1-jk]carbazole-4-one収率 41%

試薬・触媒・溶媒 1

HCID 679Dimethyl Sulfoxide溶媒

実験手順

10-bromo-2-hydroxy-4H-pyrido3,2,1-jk]carbazole-4-one (250 mg) obtained in Example 59 was suspended in dimethyl sulfoxide (10 ml), and potassium carbonate (210 mg) was added to the suspension. The mixture was stirred at room temperature for 30 minutes and 1-bromo-2-pentanone (170 mg) was added to the mixture. The mixture was stirred at room temperature for 3 hours, and the reaction mixture was poured into ice water and extracted with ethyl acetate. The ethyl acetate layer was washed with saturated aqueous solution of sodium chloride, dried over anhydrous sodium sulfate, and the solvent was evaporated under reduced pressure. The residue was purified by silica gel flash column chromatography (eluent: methylene chloride containing 2% methanol) to obtain the title compound (130 mg, 41%).

後処理

  1. stirringThe mixture was stirred at room temperature for 3 hours
  2. extractionextracted with ethyl acetate
  3. washThe ethyl acetate layer was washed with saturated aqueous solution of sodium chloride
  4. dry with materialdried over anhydrous sodium sulfate
  5. customthe solvent was evaporated under reduced pressure
  6. customThe residue was purified by silica gel flash column chromatography (eluent: methylene chloride containing 2% methanol)

出典と根拠

ORDレコード
ord-3c945a4dc9f54367b2aca50167157949
出典データセット
uspto-grants-2000_01
特許番号
US06018046

反応ノート

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