反应详情

To a solution of N,N′-bis(tert-butoxycarbonyl)-N″-(3-(3-nitropyridin-2-yl)phenyl)guanidine (200 mg) in dichloromethane (2 ml) was added 4N hydrogen chloride in 1,4-dioxane (2 ml), and the mixture was stirred at room temperature for 16 hours. The solvent was evaporated under reduced pressure. To the residue was added 5% ethanol in ethyl acetate (100 ml), and the.precipitate was collected by filtration and dried under reduced pressure to give 3-(3-nitropyridin-2-yl)phenylguanidine dihydrochloride (127 mg).

1. customThe solvent was evaporated under reduced pressure
2. additionTo the residue was added 5% ethanol in ethyl acetate (100 ml)
3. filtrationthe.precipitate was collected by filtration
4. customdried under reduced pressure