in dichloromethane T=20°C; 1.25 h; Heating / reflux;

1: 84 percent / triethylamine / CH2Cl2 / 1.) 0 deg C, 20 min, 2.) room temperature, 1.5 h 2: 87 percent / tetra-n-butylammonium azide / acetonitrile / 1 h / 65 °C 3: 1.) hydrogen, 2.) pyridine, triethylamine / 1.) methanol, 4 atm, room temperature, 4 h, 2.) room temperature, 16 h View Scheme

1: 87 percent / tetra-n-butylammonium azide / acetonitrile / 1 h / 65 °C 2: 1.) hydrogen, 2.) pyridine, triethylamine / 1.) methanol, 4 atm, room temperature, 4 h, 2.) room temperature, 16 h View Scheme

pyridine; hydrogen; triethylamine 1.) methanol, 4 atm, room temperature, 4 h, 2.) room temperature, 16 h; Yield given. Multistep reaction. Yields of byproduct given. Title compound not separated from byproducts;

Multistep reaction;

1: With lithium aluminium tetrahydride in tetrahydrofuran T=20°C; Heating / reflux; 2: With sodium hydroxide; water in tetrahydrofuran T=5°C; 1 h;