Tetrahydrofuran → (+)-(4aR)-(10bR)-4-methyl-8-(4-chloro-3-trifluoromethylphenyl)-10b-methyl-1,2,3,4,4a,5,6,10b-octahydrobenzo[f]quinolin-3-one

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Reaction Steps

A 15 mL round bottom flask was charged with (+)-(4aR)-(10bR)-4-methyl-8-bromo-10b-methyl-1,2,3,4,4a,5,6,10b-octahydrobenzo[f]quinolin-3-one (200 mg, 0.65 mmol), tetrakis (triphenylphosphine) palladium (0) (23 mg, 0.02 mmol), 4-chloro-3-trifluoromethylphenylboronic acid (175 mg, 0.78 mmol), 0.65 mL of 2M aq. sodium carbonate solution and 2 mL of THF, fitted with a reflux condenser, and the stirred mixture was heated at 80°, under nitrogen, for 16 h. The mixture was cooled, diluted with chloroform (50 mL) and washed with brine (2×25 mL). The combined organic extracts were dried over sodium sulfate, concentrated, and purified by silica gel chromatography (ethyl acetate eluent), to give 188 mg (71%) of the title compound as a white solid. mp 134°-137°. FDMS: m/e=407. α[D]589 =+59.74 (c=1.02, chloroform).

Provenance & Evidence