反应详情

温度

110 °C

An oven-dried resealable Schlenk tube was charged with CuI (10 mg, 0.0525 mmol, 5.0 mol %), 1,10-phenanthroline (20 mg, 0.111 mmol), 4-cyanoaniline (146 mg, 1.24 mg), sodium tert-butoxide (145 mg, 1.51 mmol), evacuated and backfilled with argon. Dodecane (235 μL), 5-iodo-m-xylene (150 μL, 1.04 mmol) and dioxane (1.0 mL) were added under argon. The Schlenk tube was sealed and the reaction mixture was stirred magnetically at 110° C. for 23 h. The resulting brown suspension was cooled to room temperature and filtered through a 0.5×1 cm pad of silica gel eluting with 10 mL of ethyl acetate. The filtrate was concentrated and the residue was purified by flash chromatography on silica gel (2×15 cm; hexane-ethyl acetate 5:1; 10 mL fractions). Fractions 7-16 provided 159 mg (69% yield) of the product as white crystals. 1H NMR (400 MHz, CDCl3): δ 7.51-7.47 (m, 2H), 6.91-6.95 (m, 2H), 6.83-6.80 (m, 2H), 6.80-6.78 (m, 1H), 6.02 (br s, 1H), 2.33 (q, J=0.5 Hz, 6H).

1. customevacuated
2. customThe Schlenk tube was sealed
3. temperatureThe resulting brown suspension was cooled to room temperature
4. filtrationfiltered through a 0.5×1 cm pad of silica gel eluting with 10 mL of ethyl acetate
5. concentrationThe filtrate was concentrated
6. customthe residue was purified by flash chromatography on silica gel (2×15 cm; hexane-ethyl acetate 5:1; 10 mL fractions)