triethylamine in toluene T=20°C; 3 h; Heating / refluxResolution of racemate; Purification / work up;

hydrogenchloride in water

1: With sodium hydroxide in water T=20°C; 0.5 h; 2: With hydrogenchloride in water T=0 - 5°C; pH=2 - 3; 2 h; 3: With acetic anhydride in toluene T=20°C; 12 h; Heating / reflux;

1: With sodium hydroxide in water T=20°C; 0.5 h; 2: With hydrogenchloride in water T=0 - 5°C; pH=2 - 3; 2 h; 3: With acetic anhydride in toluene T=20°C; 12 h; Heating / reflux;