1.1: H2 / Pd/C / methanol / 12 h / 20 °C 2.1: HCl / methanol / 0 - 20 °C 2.2: CH2Cl2 / 6 h / 20 °C View Scheme

1.1: N-methylmorpholine; ethyl chloroformate / CH2Cl2 / 0.25 h / 0 °C 1.2: 79 percent / CH2Cl2 / 3.3 h / 0 - 20 °C 2.1: H2 / Pd/C / methanol / 12 h / 20 °C 3.1: HCl / methanol / 0 - 20 °C 3.2: CH2Cl2 / 6 h / 20 °C View Scheme

1: 2-amino-N-benzyl-N-methoxy-acetamide With hydrogenchloride in methanol T=0 - 20°C; 2: N-(diphenylmethylene)amine in dichloromethane T=20°C; 6 h;