Sodium hydride → (2-Methyl-6,7-dihydro-8H-indeno[5,4-d][1,3]oxazol-8-ylidene)acetonitrile

HRID 883198ノート

反応式

HRID 883198 の反応式
[H-].[Na+].[C:3]([CH2:5]P(=O)(OCC)OCC)#[N:4].[CH3:14][C:15]1[O:16][C:17]2[C:26]3[C:25](=O)[CH2:24][CH2:23][C:22]=3[CH:21]=[CH:20][C:18]=2[N:19]=1.[Cl-].[NH4+]>O1CCCC1>[CH3:14][C:15]1[O:16][C:17]2[C:26]3[C:25](=[CH:5][C:3]#[N:4])[CH2:24][CH2:23][C:22]=3[CH:21]=[CH:20][C:18]=2[N:19]=1

参加物

6

反応物 4

HCID 24758Sodium hydrideHCID 25517Ammonium ChlorideHCID 75676Diethyl (cyanomethyl)phosphonateHCID 577812772-Methyl-6,7-dihydro-8H-indeno[5,4-d][1,3]oxazol-8-one

生成物 1

HCID 67353411(2-Methyl-6,7-dihydro-8H-indeno[5,4-d][1,3]oxazol-8-ylidene)acetonitrile収率 76.3%

試薬・触媒・溶媒 1

HCID 8028Tetrahydrofuran溶媒2 回

実験手順

To a suspension of 60% sodium hydride (90.0 mg, 2.24 mmol) in tetrahydrofuran (9 mL) was added diethyl cyanomethylphosphonate (393 μL, 2.43 mmol) under ice-cooling, and the mixture was stirred for 15 min. Thereto was added a solution of 2-methyl-6,7-dihydro-8H-indeno[5,4-d][1,3]oxazol-8-one (350 mg, 1.87 mmol) in tetrahydrofuran (9 mL), and the mixture was further stirred for 1 hr. 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 (300 mg, yield 76%).

後処理

  1. temperaturecooling
  2. stirringthe mixture was further stirred for 1 hr
  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-49fd3e8ea90e4a13bbe376ee2663b5a7
出典データセット
uspto-grants-2012_08
特許番号
US08236837B2

反応ノート

読み込み中…