反应详情

To an RBF equipped with a condenser and outfitted with a heating mantle was placed the N-phenyl-3-bromo-isonicotinamide (34 g, 0.123 mol) and 200 ml of 25% HCl. The reaction was left to stir for 3 days. The mixture was cooled to room temperature, and diluted with ethyl acetate. The aqueous layer was extracted and the two layers separated. To the aqueous layer, solid Na2CO3 was added until the pH˜4-5 and a dark oil layer appeared. This was then diluted and extracted with ethyl acetate. The two layers were separated and the aqueous layer was concentrated under reduced pressure to give an off-white solid. To this 100 ml of 2M HCl was added and the solids collected. The off-white solids were placed in a vacuum oven at 60° C. overnight. Yield: 22.4 g (76% th).

1. customTo an RBF equipped with a condenser
2. waitThe reaction was left
3. extractionThe aqueous layer was extracted
4. customthe two layers separated
5. additionTo the aqueous layer, solid Na2CO3 was added until the pH˜4-5
6. additionThis was then diluted
7. extractionextracted with ethyl acetate
8. customThe two layers were separated
9. concentrationthe aqueous layer was concentrated under reduced pressure
10. customto give an off-white solid
11. customthe solids collected
12. waitThe off-white solids were placed in a vacuum oven at 60° C. overnight