反应详情

温度

25 °C

A solution of p-nitrocinnamic acid (3.86 g, 20.0 mmol) in MeOH (50 mL) was treated with H2SO4 (2 mL) and was stirred at 25° C. for 24 h. Concentration afforded S31 (4.10 g, 19.8 mmol, 99%) as a yellow solid: 1H NMR (CDCl3, 500 MHz) 8.26 (d, 2H, J=8.4 Hz), 7.12 (d, 1H, J=16.1 Hz), 7.68 (d, 2H, J=8.8 Hz), 6.58 (d, 1H, J=16.1 Hz), 3.85 (s, 3H).

1. concentrationConcentration
2. customafforded S31 (4.10 g, 19.8 mmol, 99%) as a yellow solid