1: 74 percent / 1 h / 200 °C 2: 92 percent / (CF3CO)2O, BF3*Et2O / CH2Cl2 / 1 h / Ambient temperature 3: 97 percent / NaBH4 / methanol / 0.33 h / 0 °C 4: SOCl2 / 0.17 h / Ambient temperature 5: CH2Cl2 / 2 h / Ambient temperature 6: 48 percent / toluene / 8 h / Heating View Scheme

potassium carbonate in acetone T=30°C; 35 h;

1: 74 percent / 1 h / 200 °C 2: 92 percent / (CF3CO)2O, BF3*Et2O / CH2Cl2 / 1 h / Ambient temperature View Scheme

1: 74 percent / 1 h / 200 °C 2: 92 percent / (CF3CO)2O, BF3*Et2O / CH2Cl2 / 1 h / Ambient temperature 3: 97 percent / NaBH4 / methanol / 0.33 h / 0 °C 4: SOCl2 / 0.17 h / Ambient temperature 5: CH2Cl2 / 2 h / Ambient temperature 6: 48 percent / toluene / 8 h / Heating View Scheme

T=200°C; 1 h;

tri[2-(2-methoxyethoxy)ethyl]amine; copper(l) chloride; tri[2-(2-methoxyethoxy)ethyl]amine T=180°C; 8 h;