Acetic Acid → HCID 86668511, compound

Participants

Reaction Steps

A solution of 130 mg (0.295 mmol) 3-(2-chloro-6-fluorophenyl)-5-[1-(3-fluorophenyl)-3-(trifluoromethyl)-1H-pyrazol-4-yl]isoxazol-4-amine (example 117) in a mixture of 1847 mg (17.4 mmol) trimethylorthoether and 1660 mg (27.7 mmol) acetic acid was stirred at r.t. for 1 h. The suspension was filtered, and the obtained white solid salts were washed on the filter with hexane. Filtrates were combined and evaporated to dryness. The residue was treated by hexane, and the extract was purified by CC on silica gel, (eluent EtOAc/hexane 1/1). The obtained fraction of the pure product (example 141) was evaporated to give 50 mg of a light greenish oil (yield 36%). Result of LC/MS MH+: 469.04; 1H NMR (400 MHz, methanol-d4): 7.29-7.35 (m, 1H) 7.44 (s, 3H) 7.46-7.50 (m, 1H) 7.57-7.67 (m, 2H) 7.72 (s, 1H) 8.26 (s, 1H)

Provenance & Evidence