Ammonium Chloride → 1-(diphenylmethyl)-3-(5-fluoro-7-hydroxy-2,3-dihydro-1,4-benzodioxin-6-yl)-3-hydroxy-1,3-dihydro-2H-indol-2-one

HRID 1407523ノート

反応式

HRID 1407523 の反応式
[F:1][C:2]1[C:7]2[O:8][CH2:9][CH2:10][O:11][C:6]=2[CH:5]=[C:4]([OH:12])[CH:3]=1.C([Mg]Cl)(C)C.[C:18]1([CH:24]([C:36]2[CH:41]=[CH:40][CH:39]=[CH:38][CH:37]=2)[N:25]2[C:33]3[C:28](=[CH:29][CH:30]=[CH:31][CH:32]=3)[C:27](=[O:34])[C:26]2=[O:35])[CH:23]=[CH:22][CH:21]=[CH:20][CH:19]=1.[Cl-].[NH4+]>ClCCl.O1CCCC1>[C:36]1([CH:24]([C:18]2[CH:23]=[CH:22][CH:21]=[CH:20][CH:19]=2)[N:25]2[C:33]3[C:28](=[CH:29][CH:30]=[CH:31][CH:32]=3)[C:27]([C:3]3[C:4]([OH:12])=[CH:5][C:6]4[O:11][CH2:10][CH2:9][O:8][C:7]=4[C:2]=3[F:1])([OH:34])[C:26]2=[O:35])[CH:37]=[CH:38][CH:39]=[CH:40][CH:41]=1

参加物

7

反応物 4

HCID 25517Ammonium ChlorideHCID 19692771-(diphenylmethyl)-1H-indole-2,3-dioneHCID 673575678-Fluoro-2,3-dihydro-1,4-benzodioxin-6-olHCID 178418918HCID 178418918、化合物

生成物 1

HCID 673575191-(diphenylmethyl)-3-(5-fluoro-7-hydroxy-2,3-dihydro-1,4-benzodioxin-6-yl)-3-hydroxy-1,3-dihydro-2H-indol-2-one収率 64%

試薬・触媒・溶媒 2

HCID 6344Dichloromethane溶媒HCID 8028Tetrahydrofuran溶媒2 回

実験手順

A 100 mL round-bottom flask was charged with 8-fluoro-2,3-dihydrobenzo[b][1,4]dioxin-6-ol (6.4 g, 37 mmol) and tetrahydrofuran (60 mL). A 2 M solution of isopropylmagnesium chloride in tetrahydrofuran (20.0 mL, 40.0 mmol) was added at 5° C. and the reaction mixture was stirred for 15 min. The reaction mixture was concentrated in vacuo and dichloromethane (60 mL) was added, followed by a solution of 1-(diphenylmethyl)-1H-indole-2,3-dione (10.9 g, 35.0 mmol) in dichloromethane (60 mL). The reaction mixture was heated at reflux for 5 h, allowed to cool to ambient temperature and stirred for a further 16 h. Saturated aqueous ammonium chloride (30 mL) was added and the phases were separated. The organic phase was dried over magnesium sulfate, filtered and concentrated in vacuo. Trituration of the residue in methanol (30 mL) afforded 1-(diphenylmethyl)-3-(5-fluoro-7-hydroxy-2,3-dihydro-1,4-benzodioxin-6-yl)-3-hydroxy-1,3-dihydro-2H-indol-2-one (10.8 g, 64%) as an off-white solid: MS (ES+) m/z 506.0 (M+23).

後処理

  1. concentrationThe reaction mixture was concentrated in vacuo and dichloromethane (60 mL)
  2. additionwas added
  3. temperatureThe reaction mixture was heated
  4. temperatureat reflux for 5 h
  5. stirringstirred for a further 16 h
  6. customthe phases were separated
  7. dry with materialThe organic phase was dried over magnesium sulfate
  8. filtrationfiltered
  9. concentrationconcentrated in vacuo

出典と根拠

ORDレコード
ord-335c6784f758420481888d44a9e89b90
出典データセット
uspto-grants-2014_12
特許番号
US08916580B2

反応ノート

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