Ethyl isocyanate → HCID 86731754, compound

Participants

Reaction Steps

To a solution of 5-amino-3-[(4,6-dimethylpyridin-2-yl)amino]pyridine-2-carboxamide TFA salt (50 mg, 0.13 mmol) in THF (1 mL) was added ethyl isocyanate (12 mg, 0.18 mmol) and triethylamine (0.075 mL, 0.54 mmol), and the reaction mixture was stirred for 2 hours at room temperature. Additional ethyl isocyanate (12 mg, 0.18 mmol) and triethylamine (0.075 mL, 0.54 mmol) were added, and the reaction mixture was heated to 55° C. for 18 hours. The reaction mixture was allowed to cool to room temperature and concentrated under reduced pressure. The residue was purified by reverse phase HPLC (acetonitrile/water with 0.1% TFA, linear gradient) to afford 3-[(4,6-dimethylpyridin-2-yl)amino]-5-[(ethylcarbamoyl)amino]pyridine-2-carboxamide. MS ESI calc'd. for C16H21N6O2 [M+H]+ 329. found 329. 1H NMR (500 MHz, DMSO-d6) δ 11.61 (s, 1H), 9.24 (s, 1H), 8.86 (s, 1H), 8.23 (d, J=2.2 Hz, 1H), 8.13 (s, 1H), 7.57 (s, 1H), 6.63 (s, 1H), 6.53 (s, 1H), 6.33 (t, J=5.3 Hz, 1H), 3.20-3.07 (m, 2H), 2.40 (s, 3H), 2.23 (s, 3H), 1.06 (t, J=7.2 Hz, 3H).

Provenance & Evidence