反応式
[Cl:1][CH:2]([CH3:6])[C:3](Cl)=[O:4].[OH:7][C@H:8]1[C@@H:12]([O:13][C:14]([CH3:16])=[O:15])[CH2:11][O:10][CH2:9]1.N1C=CC=CC=1.ClCCl>O>[C:14]([O:13][C@H:12]1[CH2:11][O:10][CH2:9][C@H:8]1[O:7][C:3](=[O:4])[CH:2]([Cl:1])[CH3:6])(=[O:15])[CH3:16]参加物
6
反応条件
- 温度
- 23 °C
実験手順
12.4 g of (±)-2-chloropropionyl chloride were added dropwise at 0°-5° C. to an ice-cooled mixture of 15.0 g of (±)-(3R,4S)-3-hydroxy-4-methylcarbonyloxytetrahydrofuran, 8.1 g of anhydrous pyridine and 200 ml of anhydrous dichloromethane. After addition was complete, the reaction mixture was stirred at 23° C. for a further 4 hours, after which it was poured onto 400 ml of water. The organic phase was then separated off, washed twice with 50 ml of water each time, dried over sodium sulfate and finally concentrated. The crude product was purified by distillation at a pressure of 10 mbar.
後処理
- temperaturecooled
- additionAfter addition
- customThe organic phase was then separated off
- washwashed twice with 50 ml of water each time
- dry with materialdried over sodium sulfate
- concentrationfinally concentrated
- distillationThe crude product was purified by distillation at a pressure of 10 mbar
出典と根拠
- ORDレコード
- ord-e6001659ddac4b01bf370c708fa8cdd0
- 出典データセット
- uspto-grants-1998_03
- 特許番号
- US05733850
関連ノート
読み込み中…