in pyridine T=230°C; 42 h; 1.) dry pyridine, 230 deg C, 42 h, 2.) ice, liquor ammonia, 3 h;

1: 79 percent / pyridine / 42 h / 230 °C / 1.) dry pyridine, 230 deg C, 42 h, 2.) ice, liquor ammonia, 3 h 2: 77 percent / NBS, dibenzoyl peroxide / CCl4 / 36 h / Heating; Irradiation View Scheme

1: 79 percent / pyridine / 42 h / 230 °C / 1.) dry pyridine, 230 deg C, 42 h, 2.) ice, liquor ammonia, 3 h 2: 75 percent / hydroxylamine hydrochloride, Na2CO3 / pyridine; ethanol; H2O / 3 h / Heating View Scheme