ammonia in pyridine; diethyl ether 6 h; Ambient temperature;

1: 20 percent / acetyl nitrate / 1.5 h / -30 °C 2: 92 percent / 2.5percent NaOH / dioxane / 0.5 h / Ambient temperature 3: 92 percent / SOCl2 / 3 h / Heating 4: 63 percent / ammonia / diethyl ether; pyridine / 6 h / Ambient temperature View Scheme

1: 92 percent / SOCl2 / 3 h / Heating 2: 63 percent / ammonia / diethyl ether; pyridine / 6 h / Ambient temperature View Scheme

1: 92 percent / 2.5percent NaOH / dioxane / 0.5 h / Ambient temperature 2: 92 percent / SOCl2 / 3 h / Heating 3: 63 percent / ammonia / diethyl ether; pyridine / 6 h / Ambient temperature View Scheme

1: 85 percent / pyridine / 12 h / Ambient temperature; benzene, reflux, 72 h 2: 92 percent / 2.5percent NaOH / dioxane / 0.5 h / Ambient temperature 3: 92 percent / SOCl2 / 3 h / Heating 4: 63 percent / ammonia / diethyl ether; pyridine / 6 h / Ambient temperature View Scheme