Propargyl bromide → HCID 18966554、化合物

HRID 2226167ノート

反応式

HRID 2226167 の反応式
[CH2:1]([N:8]1[C:12](=[O:13])[C:11]([CH3:15])([CH3:14])[NH:10][C:9]1=[O:16])[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1.C(=O)([O-])[O-].[K+].[K+].[CH2:23](Br)[C:24]#[CH:25].C(OCC)(=O)C.CCCCCC>CC(C)=O>[CH2:1]([N:8]1[C:12](=[O:13])[C:11]([CH3:14])([CH3:15])[N:10]([CH2:25][C:24]#[CH:23])[C:9]1=[O:16])[C:2]1[CH:3]=[CH:4][CH:5]=[CH:6][CH:7]=1

参加物

6

反応物 4

HCID 7842Propargyl bromideHCID 11430Potassium CarbonateHCID 141912Hydantoin, 3-benzyl-5,5-dimethyl-HCID 21226206Ethyl acetate hexane

生成物 1

HCID 18966554HCID 18966554、化合物収率 50%

試薬・触媒・溶媒 1

HCID 180Acetone溶媒

実験手順

To a stirred solution of 3-benzyl-5,5-dimethylhydantoin (9.5 g, 43.6 mmole) in acetone (100 mL) at room temperature were added potassium carbonate (8.4 g, 60.9 mmole) and propargyl bromide (7.1 g of 80 % in toluene, 47.7 mmole). The reaction mixture was refluxed for 16 hr; cooled to room temperature and the solid was filtered off by suction-filtration. The filtrate was concentrated and the resultant residue was diluted with ethyl acetate and washed with water and brine. The organic layer was dried over sodium sulfate. After evaporation, a yellow crude oil was obtained. A pure product, 5.5 g (yield=50%) of 3-benzyl-1-propargyl-5,5-dimethylhydantoin as a yellow oil, was obtained by column chromatography on silica gel eluting with ethyl acetate:hexane (1:1 ).

後処理

  1. temperatureThe reaction mixture was refluxed for 16 hr
  2. filtrationthe solid was filtered off by suction-filtration
  3. concentrationThe filtrate was concentrated
  4. additionthe resultant residue was diluted with ethyl acetate
  5. washwashed with water and brine
  6. dry with materialThe organic layer was dried over sodium sulfate
  7. customAfter evaporation
  8. customa yellow crude oil was obtained

出典と根拠

ORDレコード
ord-07279795d5ec4cce9a1eec7f119f060a
出典データセット
uspto-grants-1994_09
特許番号
US05346913

反応ノート

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