Dichloromethane → HCID 69004179, compound

Participants

Reaction Steps

Trimethyloxoniuim tetrafluoroborate (169.4 mg, 1.15 mmol) was added to 2-[3-(3-chloro-phenyl)-[1,2,4]oxadiazol-5-yl]-3-oxo-piperazine-1-carboxylic acid tert-butyl ester (450 mg, 1.15 mmol) in dichloromethane (3 mL) under argon at room temperature and then stirred overnight. The reaction mixture was directly purified by flash chromatography on basic alumina using 30% ethyl acetate in hexanes to afford the titled compound (284.6 mg, 61%). 1H NMR (CDCl3) δ (ppm): 8.09 (m, 1H), 7.97 (m, 1H), 7.46 (m, 2H), 4.88 (m, 1H), 4.01 (m, 1H), 3.72 (s, 3H), 3.51 (m, 3H), 3.35 (m, 1H), 2.90 (m, 1H), 1.34 (m, 9H).

Provenance & Evidence