Ethyl isocyanate → 1-(2-(2-(3-(Benzyloxy)pyridin-2-ylamino)thiazol-4-yl)ethyl)-3-ethylurea

Participants

Reaction Steps

Crude 4-(2-aminoethyl)-N-(3-(benzyloxy)pyridin-2-yl)thiazol-2-amine (Example 134, Step A; 0.25 g, 0.766 mmol) was dissolved in DMF (20 mL), and isocyanatoethane (0.109 g, 1.53 mmol) was added. The reaction mixture was stirred for 2 hours, then partitioned between ethyl acetate and water. The organic layer was washed with water and brine, dried, and concentrated. The residue was purified via MPLC (Biotage) eluting with ethyl acetate to afford the title compound (0.092 g, 30.2% yield) as a light yellow powder. 1H NMR (DMSO-d6) δ 0.97 (t, 3H), 2.67 (t, 2H), 2.98 (m, 2H), 3.29 (m, 2H), 5.26 (s, 2H), 5.82 (bt, 2H), 6.64 (s, 1H), 6.88 (m, 1H), 7.32-7.43 (m, 4H), 7.58 (d, 2H), 7.85 (d, 1H), 7.95 (s, 1H), 9.91 (s, 1H).

Provenance & Evidence