Water → HCID 11652380, compound

Participants

Reaction Steps

To 50 mg (0.28 mmol) of 4,6-diamino-2-ethoxy-nicotinonitrile in 1 mL of pyridine was added 150 μL (1.21 mmol) of 2-thiopheneacetyl chloride, dropwise. The mixture was stirred for 5 min at ambient temperature, then 1 mL of water was added. The mixture was stirred for an additional 30 minutes then concentrated under reduced pressure. The residue was taken up in 10 mL of ethyl acetate, extracted with water (2×5 mL), 1M HCl(aq.) (1×5 mL), saturated NaHCO3(aq.) (2×5 mL), and brine (1×5 mL), dried over MgSO4, filtered, and concentrated to an oil. This was partially purified via silica gel chromatography, eluting with 30% ethyl acetate:hexanes to provide a sticky, yellow solid. This was triturated with methanol to provide 8 mg (9%) of a white solid. 1H NMR (300 MHz, d6-DMSO) δ 10.33 (s, 1H), 7.38 (m, 1H), 7.18 (s, 1H), 6.97 (m, 2H), 6.92 (s, 2H), 4.34 (q, 2H, J=7.1 Hz), 3.94 (s, 2H), 1.30 (t, 3H, J=7.1 Hz); MS (ESI) m/e=275 (M−Et+H)+, 303 (M+H)+, 301 (M−H)−.

Provenance & Evidence