1: methanol / 0.33 h / 30 °C 2: water; potassium hydroxide / ethanol / 30 °C View Scheme

1: methanol / 0.33 h / 30 °C 2: water; potassium hydroxide / ethanol / 30 °C 3: phosphorus pentachloride / dichloromethane / |Reflux 4: dichloromethane / 0.5 h / 0 °C View Scheme

in methanol T=30°C; 0.333333 h; regioselective reaction;