1: With phosphoric acid; nitric acid; sodium nitrite in water T=-5°C; 0.833333 h; 2: With hypophosphorous acid in water T=-5 - 20°C; 20.5 h; 3: With sodium hydroxide; water T=0°C;

1.1: bromine / chloroform / 60 h / 20 °C 2.1: nitric acid; phosphoric acid / 0.08 h 2.2: 0.75 h / -5 °C 2.3: 20.5 h / -5 - 18 °C View Scheme

1.1: 1.5 h / Reflux 1.2: pH 12 2.1: bromine / chloroform / 60 h / 20 °C 3.1: nitric acid; phosphoric acid / 0.08 h 3.2: 0.75 h / -5 °C 3.3: 20.5 h / -5 - 18 °C View Scheme