反应详情

温度

2.5 °C

5-Iodopyridin-2-amine (5 g, 22.7 mmol) was dissolved in 50 ml of dichloromethane and Et3N (6.3 ml, 45.5 mmol, 2 equiv.) was added at room temperature. The mixture was cooled to 0-5° C. and pivaloyl chloride (3.4 ml, 27.3 mmol, 1.2 equiv.) was added dropwise. The reaction mixture was stirred for 1 hour at 0-5° C. Saturated NaHCO3-solution was added and the mixture was extracted with dichloromethane. The organic extracts were dried with sodium sulfate, filtered and evaporated to dryness. The desired N-(5-iodopyridin-2-yl)pivalamide (7.34 g, 99.8% yield) was obtained as a brown oil, MS: m/e=305.0 (M+H+).

1. extractionthe mixture was extracted with dichloromethane
2. dry with materialThe organic extracts were dried with sodium sulfate
3. filtrationfiltered
4. customevaporated to dryness