4-Aminopyridine → 3-(indolin-1-ylsulfonyl)-N-(pyridin-4-yl)benzamide

Participants

Reaction Steps

3-(indolin-1-ylsulfonyl)benzoic acid (3) (200 mg, 0.66 mmol) and 4-aminopyridine (52 mg, 0.55 mmol) using method C. The residue was purified using flash chromatography eluting with 30-90 EtOAc in hexanes. The resulting solid was triturated with dichloromethane/hexanes to give 3-(indolin-1-ylsulfonyl)-N-(pyridin-4-yl)benzamide as an off-white solid. Yield: 86 mg (43%). 1H-NMR: 10.81 (s, 1H), 8.50 (d, J=6.0 Hz, 2H), 8.35 (t, J=1.5 Hz, 1H), 8.24 (dt, J=8.0, 1.0, 1.0, 1H), 8.01 (dt, J=8.0, 1.0, 1.0, 1H), 7.77-7.72 (m, 3H), 7.50 (d, J=8.0 Hz, 1H), 7.21 (t, J=7.5 Hz, 1H), 7.16 (d, J=7.0 Hz, 1H), 6.99 (dt, J=7.5, 7.5, 1.0 Hz, 1H), 3.98 (t, J=8.5 Hz, 2H), 2.91 (t, J=8.5 Hz, 2H).

Provenance & Evidence