ammonia in tetrahydrofuran; water T=0°C; 0.25 h;

1: With hydrogenchloride; sodium nitrite in water; acetic acid T=0°C; 0.75 h; 2: With sulfur dioxide; copper dichloride in water; acetic acid T=-5 - 20°C; 12 h; 3: With ammonia in tetrahydrofuran; water T=0°C; 0.25 h;

1: With sodium hydroxide; water in methanol T=20°C; 3 h; 2: With hydrogenchloride in water