反应详情

温度

90 °C

An oven-dried resealable Schlenk tube was charged with CuI (2.0 mg, 0.0105 mmol, 1.0 mol %), acetamide (180 mg, 3.05 mmol), K3PO4 (450 mg, 2.12 mmol), evacuated and backfilled with argon. trans-1,2-Cyclohexanediamine (13 μL, 0.108 mmol, 10 mol %), 2-iodoanisole (135 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 90° C. for 23 h. The resulting light green 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 2:3; 20 mL fractions). Fractions 10-16 provided 162 mg (94% yield) of the product as white crystals. The 1H NMR spectrum was in accord with that reported. Hibbert, F.; Mills, J. F.; Nyburg, S. C.; Parkins, A. W. J. Chem. Soc., Perkin Trans. 1 1998, 629.

1. customevacuated
2. customThe Schlenk tube was sealed
3. temperatureThe resulting light green 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 2:3; 20 mL fractions)