1: in dichloromethane T=0°C; 0.0833333 h; 2: With 4-methyl-morpholine; benzotriazol-1-ol in dichloromethane T=0 - 5°C; 0.5 h; 3: With 1-ethyl-(3-(3-dimethylamino)propyl)-carbodiimide hydrochloride in dichloromethane T=0 - 20°C; 13 h;