Sodium hydride → (6,7-Dihydro-8H-indeno[5,4-d][1,3]oxazol-8-ylidene)acetonitrile

HRID 1039269ノート

反応式

HRID 1039269 の反応式
[H-].[Na+].[C:3]([CH2:5]P(=O)(OCC)OCC)#[N:4].[O:14]1[C:18]2[C:19]3[C:20](=O)[CH2:21][CH2:22][C:23]=3[CH:24]=[CH:25][C:17]=2[N:16]=[CH:15]1.[Cl-].[NH4+]>O1CCCC1>[O:14]1[C:18]2[C:19]3[C:20](=[CH:5][C:3]#[N:4])[CH2:21][CH2:22][C:23]=3[CH:24]=[CH:25][C:17]=2[N:16]=[CH:15]1

参加物

6

反応物 4

HCID 24758Sodium hydrideHCID 25517Ammonium ChlorideHCID 75676Diethyl (cyanomethyl)phosphonateHCID 577812656H-Indeno[5,4-d]oxazol-8(7H)-one

生成物 1

HCID 67353458(6,7-Dihydro-8H-indeno[5,4-d][1,3]oxazol-8-ylidene)acetonitrile収率 73.3%

試薬・触媒・溶媒 1

HCID 8028Tetrahydrofuran溶媒2 回

実験手順

To a suspension of 60% sodium hydride (73.4 mg, 1.84 mmol) in tetrahydrofuran (8 mL) was added diethyl cyanomethylphosphonate (322 μL, 1.99 mmol) under ice-cooling, and the mixture was stirred for 15 min. Thereto was added a solution of 6,7-dihydro-8H-indeno[5,4-d][1,3]oxazol-8-one (265 mg, 1.53 mmol) in tetrahydrofuran (8 mL), and the mixture was further stirred for 30 min. To the reaction mixture was added saturated aqueous ammonium chloride solution, and the mixture was extracted with ethyl acetate. The extract was washed with saturated brine and dried over anhydrous sodium sulfate. The solvent was evaporated under reduced pressure, and the residue was purified by silica gel column chromatography (ethyl acetate/hexane=10/90→40/60) to give the title compound (220 mg, yield 73%).

後処理

  1. temperaturecooling
  2. stirringthe mixture was further stirred for 30 min
  3. extractionthe mixture was extracted with ethyl acetate
  4. washThe extract was washed with saturated brine
  5. dry with materialdried over anhydrous sodium sulfate
  6. customThe solvent was evaporated under reduced pressure
  7. customthe residue was purified by silica gel column chromatography (ethyl acetate/hexane=10/90→40/60)

出典と根拠

ORDレコード
ord-8eb67ed2b3af4ac69c61bdb72aaac1c2
出典データセット
uspto-grants-2013_10
特許番号
US08552037B2

反応ノート

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