反应详情

27.9 g of 3-(4-cyanophenyl)-2-oxo-5-oxazolidine carboxylic acid [obtainable according to Example 1] and 26.4 g of hydroxylammonium chloride are boiled for 5 h in a mixture of 750 ml of methanol and 30 ml of water in the presence of 53.4 g of sodium carbonate. The precipitate formed is filtered off with suction, washed with methanol and dried. Treatment with hydrochloric acid gives 3-[4-(amino(hydroxylimino)methyl)phenyl]-2-oxo-5-oxazolidinecarboxylic acid, hydrochloride, m.p. 205°-208°.

1. customThe precipitate formed
2. filtrationis filtered off with suction
3. washwashed with methanol
4. customdried