反応式
[C:1]([OH:20])(=[O:19])[CH2:2][CH2:3][CH2:4][CH2:5][CH2:6][CH2:7][CH2:8][CH2:9][CH2:10][CH2:11][CH2:12][CH2:13][CH2:14][CH2:15][C:16]([OH:18])=[O:17].C(O[CH2:24][C:25]1[CH:30]=[CH:29][CH:28]=[CH:27][CH:26]=1)=O>CCCCCCCC>[CH2:24]([O:17][C:16](=[O:18])[CH2:15][CH2:14][CH2:13][CH2:12][CH2:11][CH2:10][CH2:9][CH2:8][CH2:7][CH2:6][CH2:5][CH2:4][CH2:3][CH2:2][C:1]([OH:20])=[O:19])[C:25]1[CH:30]=[CH:29][CH:28]=[CH:27][CH:26]=1参加物
反応条件
- 温度
- 20 °C
実験手順
Hexadecanedioic acid (20.0 g, 69.8 mmol) and Dowex® were suspended in n-octane and heated to reflux. Benzyl formate (22.0 g, 162 mmol) was added. After 6 hours additional benzyl formate (22.0 g, 162 mmol) was added. The heating was continued for 50 hours. The reaction mixture was filtered at 80° C. The filtrate was cooled to 20° C., and the precipitate was collected by filtration. The crude product (20.2 g) was suspended in dichloromethane (220 ml) at 20° C. for 4 hours. The suspension was filtered, and the filtrate was evacuated to dryness at 20-30° C. The resulting solid (13.9 g) was recrystallised from 2-propanol (140 ml). The product was isolated by filtration, and dried to constant weight under reduced pressure at 30-40° C. Yield: 10.2 g (39%) of white material.
後処理
- temperatureheated to reflux
- filtrationThe reaction mixture was filtered at 80° C
- filtrationthe precipitate was collected by filtration
- waitThe crude product (20.2 g) was suspended in dichloromethane (220 ml) at 20° C. for 4 hours
- filtrationThe suspension was filtered
- customthe filtrate was evacuated to dryness at 20-30° C
- customThe resulting solid (13.9 g) was recrystallised from 2-propanol (140 ml)
- customThe product was isolated by filtration
- customdried to constant weight under reduced pressure at 30-40° C
出典と根拠
- ORDレコード
- ord-5fac0035e8e44bb585875c74861c995b
- 出典データセット
- uspto-grants-2014_01
- 特許番号
- US08637647B2
関連ノート
読み込み中…