4-Hydroxybenzaldehyde → HCID 23397582、化合物
反応式
[OH:1][C:2]1[CH:9]=[CH:8][C:5]([CH:6]=[O:7])=[CH:4][CH:3]=1.[OH-].[Na+].[C:12]([O:15][C@@H:16]1[C@@H:21]([O:22][C:23](=[O:25])[CH3:24])[C@H:20]([O:26][C:27](=[O:29])[CH3:28])[CH2:19][O:18][C@@H:17]1Br)(=[O:14])[CH3:13]>[Br-].C([N+](CCCC)(CCCC)CCCC)CCC.ClCCl.O>[C:12]([O:15][C@@H:16]1[C@@H:21]([O:22][C:23](=[O:25])[CH3:24])[C@H:20]([O:26][C:27](=[O:29])[CH3:28])[CH2:19][O:18][C@H:17]1[O:1][C:2]1[CH:9]=[CH:8][C:5]([CH:6]=[O:7])=[CH:4][CH:3]=1)(=[O:14])[CH3:13]参加物
実験手順
p-Hydroxybenzaldehyde (2.2 g, 18 mmol), dichloromethane (20 mL) and a 5% aqueous solution of sodium hydroxide (25 mL) were put in a 100 mL round bottom flask and stirred vigorously. At that time, a water phase turned yellow. To the resulting mixture, tetrabutylammonium bromide (1.0 g, 3.0 mmol) was added, and then, a dichloromethane (about 6 mL) solution of 2,3,4-tri-O-acetyl-α-D-xylopyranosyl bromide (4.0 g, 12 mmol) was added dropwise. A reaction vessel was protected from light. The resulting mixture was stirred vigorously at room temperature for 2 days. The separated organic phase was washed with 50 mL of a 5% aqueous solution of sodium hydroxide three times and then with 50 mL of water three times, dried over anhydrous sodium sulfate and evaporated to dryness to give the title compound. Light brown solid. Yield 1.5 g, 34%. The product was unstable at room temperature, and stored in the freezer.
後処理
- customA reaction vessel was protected from light
- stirringThe resulting mixture was stirred vigorously at room temperature for 2 days
- washThe separated organic phase was washed with 50 mL of a 5% aqueous solution of sodium hydroxide three times
- dry with materialwith 50 mL of water three times, dried over anhydrous sodium sulfate
- customevaporated to dryness
出典と根拠
- ORDレコード
- ord-eb16844ebd1546b9897f4b2dcf002900
- 出典データセット
- uspto-grants-2005_10
- 特許番号
- US06958389B2
反応ノート
読み込み中…