piperidine; pyridine 504 h; Ambient temperature;

1: 48.1 percent / copper, 10percent KOH / 1 h / 210 °C 2: 65 percent / pyridine, piperidine / 504 h / Ambient temperature View Scheme

1: 88 percent / acetic acid, bromine / 2 h / Ambient temperature 2: 48.1 percent / copper, 10percent KOH / 1 h / 210 °C 3: 65 percent / pyridine, piperidine / 504 h / Ambient temperature View Scheme