Ethyl benzoylacetate → 14895-21-7
反応式
[C:1]([CH2:9][C:10]([O:12][CH2:13][CH3:14])=[O:11])(=[O:8])[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1.[C:15](=[O:18])(O)[O-].[Na+]>ClC1C=CC=CC=1Cl>[C:1]([C:9]1[C:10](=[O:11])[O:12][C:13]([C:2]2[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=2)=[CH:14][C:15]=1[OH:18])(=[O:8])[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1参加物
4
反応条件
- 温度
- 0 °C
実験手順
To a solution of ethyl benzoylacetate (150 g, 0.88 mmol) in 1,2-dichlorobenzene (150 mL) was added a trace amount of sodium bicarbonate. The reaction mixture was heated to reflux. A distillate of ethanol (approximately 20 mL) was collected. The reaction mixture was cooled to 0° C. Ether (100 mL) was added to induce crystallization. The reaction mixture was kept in the refrigerator overnight. The solid formed was collected and washed with ether: m.p. 171-173° C.; 1H NMR (250 MHz, DMSO-d6) δ6.91 (s, 1 H), 7.59 (m, 6 H), 7.87 (m, 4 H).