反应详情

To a 250 mL round bottom flask was added 3-bromo-N-(2,6-diisopropylphenyl)-5-methylbenzimidamide (2.92 g, 7.82 mmol), 2-chloroacetaldehyde (50%, 2.456 g, 15.64 mmol), sodium bicarbonate (1.314 g, 15.64 mmol), 60 mL 2-propanol. The reaction mixture was heated to reflux overnight under nitrogen. The reaction mixture was cooled and diluted with ethyl acetate and water. The layers were separated and the aqueous layer was extracted with ethyl acetate. The organic layers were washed with 10% LiCl solution, brine, dried over magnesium sulfate, filtered, and evaporated. The material was purified by column chromatography eluting with 15 and 20% ethyl acetate/hexane to give desired product (2.45 g, 79%).

1. temperatureThe reaction mixture was heated
2. temperatureto reflux overnight under nitrogen
3. temperatureThe reaction mixture was cooled
4. customThe layers were separated
5. extractionthe aqueous layer was extracted with ethyl acetate
6. washThe organic layers were washed with 10% LiCl solution, brine
7. dry with materialdried over magnesium sulfate
8. filtrationfiltered
9. customevaporated
10. customThe material was purified by column chromatography
11. washeluting with 15 and 20% ethyl acetate/hexane