反应详情

Sodium azide (0.280 g, 4.32 mmol) was added to a solution of 6-bromomethyl-pyridine-2-carbonitrile (0.610 g, 2.88 mmol) in DMF (12 ml) and the resulting pale yellow solution was stirred at rt for 16 h. Standard basic workup gave the crude product as a tan solid in quantitative yield (0.501 g). The crude solid was dissolved in MeOH (15 ml), treated with 10% Pd/C (0.050 g) and placed under 40 psi H2 on a Parr shaker for 30 minutes (Note: it is imperative that this reduction is stopped at 30 minutes or reduction of the nitrile also occurs). The mixture was filtered through Celite®, the cake was washed with MeOH and the combined filtrate was concentrated under reduced pressure to give a yellow oil. Purification by column chromatography on silica gel (CH2Cl2/MeOH/NH4OH, 83:15:2, v/v/v) afforded 6-aminomethyl-pyridine-2-carbonitrile (0.178 g, 46%) as a white crystalline solid. 1H NMR (CDCl3) δ 1.96 (br s, 2H), 4.02 (s, 2H), 7.53 (d, 1H, J=9.0 Hz), 7.59 (d, 1H, J=9.0 Hz), 7.80 (t, 1H, J=9.0 Hz).

1. customStandard basic workup gave the crude product as a tan solid in quantitative yield (0.501 g)
2. waitplaced under 40 psi H2 on a Parr shaker for 30 minutes
3. waitis stopped at 30 minutes
4. filtrationThe mixture was filtered through Celite®
5. washthe cake was washed with MeOH
6. concentrationthe combined filtrate was concentrated under reduced pressure
7. customto give a yellow oil
8. customPurification by column chromatography on silica gel (CH2Cl2/MeOH/NH4OH, 83:15:2, v/v/v)