Dimethylformamide → HCID 19068171、化合物
反応式
[OH:1][C:2]1[CH:6]=[C:5]([C:7]([O:9][CH3:10])=[O:8])[O:4][N:3]=1.[C:11]([N:18]1[CH2:23][CH2:22][CH:21]([CH2:24][CH2:25][CH2:26]I)[CH2:20][CH2:19]1)([O:13][C:14]([CH3:17])([CH3:16])[CH3:15])=[O:12].C([O-])([O-])=O.[Cs+].[Cs+].CN(C=O)C>CCOCC>[C:11]([N:18]1[CH2:19][CH2:20][CH:21]([CH2:24][CH2:25][CH2:26][O:1][C:2]2[CH:6]=[C:5]([C:7]([O:9][CH3:10])=[O:8])[O:4][N:3]=2)[CH2:22][CH2:23]1)([O:13][C:14]([CH3:17])([CH3:16])[CH3:15])=[O:12]参加物
6
実験手順
A mixture of methyl 3-hydroxy-5-isoxazolecarboxylate (Aldrich) (3-5) (286 mg, 2.0 mmol), 3-4 (706 mg, 2.0 mmol), Cs2CO3 (650 mg, 2.0 mmol), and DMF (10 mL) was stirred at ambient temperature. After 72 hours the reaction mixture was diluted with ether and then washed with H2O and brine, dried (MgSO4), and concentrated. Flash chromatography (silica, 4% acetone/CH2Cl2) gave 3-6 as a colorless solid. Rf 0.54 (silica, 40 %EtOAc/hexanes).
後処理
- washwashed with H2O and brine
- dry with materialdried (MgSO4)
- concentrationconcentrated
出典と根拠
- ORDレコード
- ord-18110f652a764c16bd5b52672752c62f
- 出典データセット
- uspto-grants-1998_07
- 特許番号
- US05786373
反応ノート
読み込み中…