p-Toluenesulfonic acid → HCID 66914340, compound

Participants

Reaction Steps

phenyl[4-phenyl-8-(trifluoromethyl)quinolin-3-yl]methanone (0.210 g, 0.56 mmol) in MeOH (5 mL) is refluxed with trimethylorthoformate (0.12 mL, 1.12 mmol) and para-toluenesulfonic acid (0.005 g). After 5 h, additional orthoformate (0.20 mL) is added. After 3 h more, more orthoformate (0.20 mL) is added. After refluxing overnight, the reaction is cooled and treated with NaOMe in methanol (0.5 mL). After 10 min of stirring, the reaction is concentrated and the residue chromatographed eluting with 5:95 ethyl acetate:hexanes to afford the title compound as a white solid (0.100 g). MS (ESI) m/z 424; HRMS: calcd for C25H20F3NO2+H, 424.15244; found (ESI, [M+H]+), 424.1519.

Provenance & Evidence