Ethyl Acetate → HCID 67499619, compound

Participants

Reaction Conditions

Reaction Steps

To N-(3-chloro-1-(pyridin-3-yl)-1H-pyrazol-4-yl)-N-ethyl-3-(methylthio)propanamide (0.08 g, 0.24 mmol) in glacial acetic acid (0.82 mL) was added sodium perborate tetrahydrate (0.05 g, 0.25 mmol), and the mixture was heated at 60° C. for 1 hour. The reaction mixture was carefully poured into a separatory funnel containing saturated aqueous NaHCO3 resulting in gas evolution. When the gas evolution had ceased, ethyl acetate was added and the layers were separated. The aqueous layer was extracted twice with ethyl acetate, and all the organic layers were combined, dried over MgSO4, filtered and concentrated under reduced pressure. The crude material was purified by silica gel chromatography (0-10% methanol/dichloromethane) to give the desired product as a clear oil (0.03 g, 40%): IR (thin film) 1655 cm−1; 1H NMR (400 MHz, CDCl3) δ 8.95 (t, J=9.2 Hz, 1H), 8.63 (dd, J=4.7, 1.4 Hz, 1H), 8.20-7.86 (m, 2H), 7.59-7.33 (m, 1H), 3.73 (ddt, J=20.5, 13.4, 6.8 Hz, 2H), 3.23-3.06 (m, 1H), 2.94-2.81 (m, 1H), 2.74-2.62 (m, 2H), 2.59 (s, 3H), 1.25-1.07 (m, 3H); ESIMS m/z 341 ([M+H]+).

Provenance & Evidence