1.1: (S)-1-phenyl-ethylamine / ethyl acetate / 4 h / 10 °C 1.2: pH 1 - 1.2 2.1: sodium bis(2-methoxyethoxy)aluminium dihydride / toluene / 2 h / 20 °C 2.2: 5 °C 3.1: triphenylphosphine; N-bromosuccinmide / dichloromethane / 4 h / 5 - 10 °C View Scheme

1.1: (S)-1-phenyl-ethylamine / ethyl acetate / 4 h / 10 °C 1.2: pH 1 - 1.2 2.1: sodium bis(2-methoxyethoxy)aluminium dihydride / toluene / 2 h / 20 °C 2.2: 5 °C View Scheme

1: With (S)-1-phenyl-ethylamine in ethyl acetate T=10°C; 4 h; 2: With hydrogenchloride in water pH=1 - 1.2;