反应详情

16.2 g (104.2 mmol) of 4-acetyl-2-chloro-pyridine are stirred at 110° with 116 ml of dimethylformamide diethylacetal for 1 h. Cooling to 0°, filtering and drying at 60° under HV give 3-dimethylamino-1-(2-chloro-4-pyridyl)-2-propen-1-one; 1H-NMR (dimethyl sulfoxide): 2.98 (3H,s), 3.2 (3H,s), 5.9 (1H,d), 7.8 (3H,m), 8.5 (1H

1. temperatureCooling to 0°
2. filtrationfiltering
3. customdrying at 60° under HV