反应详情

To a solution of ethyl 2-(1-methyl-2-(benzylcarbamoyl)hydrazinyl)acetate (Compound XXXII-1) 1.33 g (5.0 mmol) in tetrahydrofuran/methanol/water (2:3:1) 24 ml, lithium hydroxide monohydrate 420 mg (10.0 mmol) was added and the mixture was stirred at room temperature overnight. The reaction mixture was diluted with water 25 ml and washed with ether 25 ml. The aqueous phase was acidified with 10%-citric acid 25 ml and extracted with chloroform 30 ml. The organic phase was washed with brine 25 ml and dried with magnesium sulfate and then filtered. The filtrate was concentrated in vacuo to obtain the title compound 1.05 g (88%).

1. washwashed with ether 25 ml
2. extractionextracted with chloroform 30 ml
3. washThe organic phase was washed with brine 25 ml
4. dry with materialdried with magnesium sulfate
5. filtrationfiltered
6. concentrationThe filtrate was concentrated in vacuo