反应详情

6.2 g of product obtained in Stage A, 6.2 g of sodium acetate and 124 cm3 of acetic anhydride are heated to reflux for 4 hours. After cooling to ambient temperature and evaporating to dryness, the residue is taken up with 50 cm3 of water, filtered, washed with 10 cm3 of water and dried. 5.65 g of expected product is obtained.

1. temperatureto reflux for 4 hours
2. customevaporating to dryness
3. filtrationfiltered
4. washwashed with 10 cm3 of water
5. customdried