反应详情

700 mg (2.15 mmol) of 2-{[2-(2-oxo-pyrrolidin-1-yl)-pyridin-4-ylmethyl]-amino}-benzoic acid methyl ester is mixed in 15 ml of methanol with 2.7 ml of 1N sodium hydroxide solution and refluxed for 1 hour. After the methanol is distilled off in a vacuum, it is diluted with water and shaken once with ethyl acetate. The aqueous phase is mixed with 5 ml of 1 mol citric acid solution and stirred overnight. The solid precipitation is suctioned off and very quickly dried. 600 mg of 2-{[2-(2-oxo-pyrrolidin-1-yl)-pyridin-4-ylmethyl]-amino}-benzoic acid, which is used as a crude product in the next stage, is obtained.

1. temperaturerefluxed for 1 hour
2. distillationAfter the methanol is distilled off in a vacuum, it
3. additionis diluted with water
4. stirringstirred overnight
5. customThe solid precipitation
6. customvery quickly dried
7. customis obtained