2,3'-bipyridine; ammonium hydroxide; copper(l) iodide; 2,2,6,6-tetramethyl-1-piperidinyloxy, free radical; oxygen in acetonitrile T=50°C; 24 h;

T=520°C;

sodium amide

diethyl ether anschliessend mit wss.Ammoniumchlorid-Loesung;

1: 1.) lithium diisopropylamide (LDA) / 1.) THF, -78 deg C, 2.) THF, -78 deg C 2: 1.) lithium diisopropylamide (LDA) / 1.) THF, -78 deg C, 2.) THF, HMPT, -78 deg C 3: K / hexamethylphosphoric acid triamide; 2-methyl-propan-2-ol 4: 45 percent / hydroxylamine hydrochloride / acetic acid / 4 h / Heating View Scheme