1: With ammonia; water; lithium in tetrahydrofuran T=-40°C; 6 - 10 h; 2: With hydrogenchloride in water pH=1.5 - 1.7; Product distribution / selectivity;

1: With hydrogenchloride; water T=100 - 105°C; 20 - 24 h; 2: With sodium hydroxide in water pH=10 - 11; 3: With hydrogenchloride in water pH=1.5 - 2; Product distribution / selectivity;