反应详情

温度

85 °C

A mixture of cis 3-(1-benzenesulfonyl-5-nitro-1H-pyrrolo[2,3-b]pyridine-4-ylamino)cyclohexanecarbonitrile (730 mg, 1.72 mmol), ammonium chloride (552 mg, 10.3 mmol) and iron powder (384 mg, 6.88 mmol) in methanol/H2O (3:1, v/v) was heated at 85° C. for 3.5 hr. The cooled reaction mixture was filtered through celite and the filtrate concentrated under vacuum. The residue was dissolved in DCM, washed with saturated sodium bicarbonate solution and brine, dried over sodium sulfate and concentrated under vacuum to a foam. The resulting residue was purified by column chromatography on silica gel (gradient: 0 to 4% MeOH in DCM) to afford 0.55 g (81%) of cis 3-(5-amino-1-benzenesulfonyl-1H-pyrrolo[2,3-b]pyridine-4-ylamino)-cyclohexanecarbonitrile. LCMS (Method H, ESI): RT=2.45 min, m+H=396.1; 1H NMR (400 MHz, DMSO) δ: 8.01 (d, 2H), 7.66 (m, 1H), 7.57 (m, 3H), 7.49 (d, 1H), 6.75 (d, 1H), 5.14 (d, 1H), 4.36 (s, 2H), 3.72 (m, 1H), 2.98 (m, 1H), 2.22 (m, 1H), 2.01-1.84 (m, 2H), 1.75 (m, 1H), 1.53-1.36 (m, 3H), 1.22 (d, 1H).

1. customThe cooled reaction mixture
2. filtrationwas filtered through celite
3. concentrationthe filtrate concentrated under vacuum
4. dissolutionThe residue was dissolved in DCM
5. washwashed with saturated sodium bicarbonate solution and brine
6. dry with materialdried over sodium sulfate
7. concentrationconcentrated under vacuum to a foam
8. customThe resulting residue was purified by column chromatography on silica gel (gradient: 0 to 4% MeOH in DCM)