反応式
[Cl:1][C:2]1[CH:7]=[C:6]([Cl:8])[C:5]([O:9][CH2:10][C:11]#[CH:12])=[CH:4][C:3]=1[N:13]1[C:17](=[O:18])[NH:16][C:15]([CH2:19][CH2:20][CH:21]=C)=[N:14]1.I([O-])(=O)(=O)=[O:24].[Na+]>O1CCCC1.O.[Os](=O)(=O)(=O)=O>[Cl:1][C:2]1[CH:7]=[C:6]([Cl:8])[C:5]([O:9][CH2:10][C:11]#[CH:12])=[CH:4][C:3]=1[N:13]1[C:17](=[O:18])[NH:16][C:15]([CH2:19][CH2:20][CH:21]=[O:24])=[N:14]1参加物
反応物 2
生成物 1
試薬・触媒・溶媒 3
実験手順
To a solution of 500 mg (1.48 mmol) of 2-[2,4-dichloro-5-(2-propynyloxy)phenyl]-2,4-dihydro-5-(3-butenyl)-3H-1,2,4-triazol-3-one in a mixture of 10 mL of tetrahydrofuran and 10 mL of water was added 696 mg (3.25 mmol) of sodium periodate and 167 mL of 0.18M aqueous solution of osmium tetroxide at room temperature. The mixture was stirred at the room temperature for 2h, and then diluted with water and extracted with ethyl acetate. The organic layer was dried (MgSO4) and concentrated in vacuo. The crude product was purified by flash chromatography over silica gel, eluting with a 96:4 v:v mixture of dichloromethane and methanol to give 464 mg of the title product of Step 1 as a white foam. 1H NMR (CDCI3, 400 MHz) δ 11.5 (broad s,1H), 9.8 (s,1H), 7.55 (s,1H), 7.2 (s,1H), 4.8 (s,2H), 2.9 (m,4H).
後処理
- extractionextracted with ethyl acetate
- dry with materialThe organic layer was dried (MgSO4)
- concentrationconcentrated in vacuo
- customThe crude product was purified by flash chromatography over silica gel
- washeluting with a 96:4 v
- additionv mixture of dichloromethane and methanol
出典と根拠
- ORDレコード
- ord-64c534178a4a4c3f822722a59b57a089
- 出典データセット
- uspto-grants-1998_03
- 特許番号
- US05728651
関連ノート
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