反应详情

To a solution of 2-(6-{[(1,3-dioxo-1,3-dihydro-2H-isoindol-2-yl)oxy]methyl}pyridin-2-yl)-1H-isoindole-1,3(2H)-dione (50 g, 125 mmol) in THF (350 mL) was added dropwise hydrazine hydrate (61 mL, 1.25 mol) at room temperature. After stirring overnight at room temperature, the reaction mixture was filtered and the filtrate was concentrated to dryness in vacuo. Purification of the residue on silica gel afforded 6-[(aminooxy)methyl]pyridin-2-amine as a colourless oil [10.0 g; 57% of theory; HPLC/MS: m/z=140 (M+H); log P(HCOOH)<−0.23].

1. filtrationthe reaction mixture was filtered
2. concentrationthe filtrate was concentrated to dryness in vacuo
3. customPurification of the residue on silica gel