1: 80.5 percent / HNO3-H2SO4 / 0.17 h / 0 °C 2: 78 percent / H2 / 10percent Pd-C / acetic acid / 7 h / Ambient temperature 3: methanol / 3 h / Ambient temperature View Scheme

1: 80.5 percent / HNO3-H2SO4 / 0.17 h / 0 °C 2: 78 percent / H2 / 10percent Pd-C / acetic acid / 7 h / Ambient temperature View Scheme

nitronium ion