反应详情

Hydroxylamine hydrochloride (0.255 gm, 0.0036 mole) and sodium acetate (0.301 gm, 0.0036 mole) were added to a stirred solution of 4-(cyclohexylamino)-1-ethyl-1H-pyrazolo[3,4-b]pyridine-5-carbaldehyde (0.250 gm, 0.0009 mole) (example 7) in ethanol. The reaction mixture was allowed to stir at room temperature for about 2 h. Ethanol was removed under reduced pressure and residue was poured in water. The title compound was then filtered and washed with water twice and finally with hexane.

1. customEthanol was removed under reduced pressure and residue
2. additionwas poured in water
3. filtrationThe title compound was then filtered
4. washwashed with water twice