Toluene → N-(6-Methyl-4'-nitrobiphenyl-3-yl)-3-(trifluoromethyl)benzamide

Beteiligte Stoffe

Reaktionsbedingungen

Reaktionsschritte

To N-(3-iodo-4-methylphenyl)-3-(trifluoromethyl)benzamide (400.0 mg, 0.99 mmol) was added 4,4,5,5-tetramethyl-2-(4-nitrophenyl)-1,3,2-dioxaborolane (270 mg, 1.1 mmol) followed by toluene (8.2 mL), then ethanol (1.15 mL), and K2CO3 (270 mg, 2.0 mmol in 1.1 mL water). The reaction was degassed with N2, then tetrakis(triphenylphosphine)palladium(0) (60 mg, 0.05 mmol) was added. The reaction was degassed again, and then heated at reflux under N2 atmosphere at 90° C. until LCMS and TLC indicated complete reaction, about 16 hours. The reaction was then cooled to ambient temperature, transferred to a separatory funnel and partitioned between water and EtOAc. The phases were separated and the organic phase was washed with water, then saturated aqueous NaCl, dried (MgSO4) and then evaporated to dryness to leave the crude product, which was purified by column chromatography to give the product (379 mg, 95.79%). 1H NMR (400 MHz, CDCl3): δ 8.29 (m, 2H), 8.12 (s, 1H), 8.07 (d, 1H), 7.82 (m, 2H), 7.5-7.7 (m, 5H), 7.33 (d, 1H), 2.26 (s, 3H). MS (EI) m/z=401 (M+H).

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