1: (D)-tyrosine With potassium hydroxide; copper(II) sulfate in water T=15 - 65°C; 1 h; 2: benzyl chloride in water; N,N-dimethyl-formamide T=20 - 60°C; 2 h; 3: With hydrogenchloride; ammonia more than 3 stages;

1: in water T=26 - 28°C; 2: With ammonia in water

1: (D)-tyrosine With sodium hydroxide; copper(II) sulfate in water T=20°C; 1 h; 2: benzyl bromide With sodium hydroxide in methanol; water T=20°C; 3 h; 3: With hydrogenchloride; sodium hydroxide more than 3 stages;