Hydrogen Peroxide → 5,5-Dioxo-2-(3-methyl-3-pyridin-4-ylpropionamido)dibenzothiophene

HRID 1064006

反応式

HRID 1064006 の反応式
CCN=C=NCCCN(C)C.[NH2:12][C:13]1[CH:25]=[CH:24][C:16]2S[C:18]3[CH:23]=[CH:22][CH:21]=[CH:20][C:19]=3[C:15]=2[CH:14]=1.ON1C2C=CC=CC=2N=N1.[CH3:36][CH:37]([C:42]1[CH:47]=[CH:46][N:45]=[CH:44][CH:43]=1)[CH2:38][C:39]([OH:41])=O.OO.C(=O)([O-])[O-].[K+].[K+].[S:56](=[O:60])(=O)(O)[OH:57]>CN(C=O)C.C(O)(=O)C.O>[O:57]=[S:56]1(=[O:60])[C:20]2[CH:21]=[CH:22][CH:23]=[CH:18][C:19]=2[C:15]2[CH:14]=[C:13]([NH:12][C:39](=[O:41])[CH2:38][CH:37]([CH3:36])[C:42]3[CH:47]=[CH:46][N:45]=[CH:44][CH:43]=3)[CH:25]=[CH:24][C:16]1=2

参加物

11

反応物 7

HCID 784Hydrogen PeroxideHCID 1118Sulfuric AcidHCID 11430Potassium CarbonateHCID 159081-Ethyl-3-(3'-dimethylaminopropyl)carbodiimideHCID 757711-HydroxybenzotriazoleHCID 2984422-DibenzothiophenamineHCID 51859043-(Pyridin-4-yl)butanoic acid

生成物 1

HCID 222778265,5-Dioxo-2-(3-methyl-3-pyridin-4-ylpropionamido)dibenzothiophene

試薬・触媒・溶媒 3

HCID 176Acetic Acid溶媒HCID 962Water溶媒HCID 6228Dimethylformamide溶媒

実験手順

EDAC (0.500 g, 2.6 mmol) was added to a solution of 2-aminodibenzothiophene (0.470 g, 2.4 mmol), 1-hydroxybenzotriazole (0.351 g, 2.6 mmol) and 3-methyl-3-pyridin-4-ylpropanoic acid (Method 7; 0.429 g, 2.6 mmol) in DMF (10 ml). The solution was then stirred at room temperature overnight. The solvent was removed in vacuo and the residue was then shaken in water (50 ml) and DCM (50 ml). The organic layer was separated, washed with brine (50 ml), dried and then evaporated in vacuo to leave a light brown solid. The crude amide was dissolved in a mixture of glacial acetic acid (15 ml) and concentrated sulphuric acid (0.5 ml) at 60° C. and hydrogen peroxide (30 wt. % solution in water, 3 ml) was added. The mixture was stirred at 60° C. for 2 hours and left to cool to room temperature overnight. The mixture was poured into water (50 ml) and made basic by the addition of potassium carbonate. The mixture was extracted into DCM (50 ml), the organic layer was separated and washed with brine (50 ml), dried and evaporated in vacuo to leave a light brown solid. The crude product was triturated with methanol (10 ml) to leave a pale yellow solid (0.496 g). NMR: 10.47 (s, 1H), 8.3 (d, 1H), 7.9 (m, 3H), 7.75 (t, 1H), 7.65 (m, 2H), 3.3 (m, 1H), 2.7 (m, 2H), 1.3 (d, 3H); m/z 379.

後処理

  1. customThe solvent was removed in vacuo
  2. stirringthe residue was then shaken in water (50 ml)
  3. customThe organic layer was separated
  4. washwashed with brine (50 ml)
  5. customdried
  6. customevaporated in vacuo
  7. customto leave a light brown solid
  8. stirringThe mixture was stirred at 60° C. for 2 hours
  9. waitleft
  10. temperatureto cool to room temperature overnight
  11. extractionThe mixture was extracted into DCM (50 ml)
  12. customthe organic layer was separated
  13. washwashed with brine (50 ml)
  14. customdried
  15. customevaporated in vacuo
  16. customto leave a light brown solid
  17. customThe crude product was triturated with methanol (10 ml)

出典と根拠

ORDレコード
ord-879f10f9c9954f99bafae45139cb48fa
出典データセット
uspto-grants-2005_11
特許番号
US06967216B2

関連ノート

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