1: 1.) EtOH, H2O, 2 h, reflux; 2.) 5 h, reflux 2: 60 percent / POCl3 / 3 h / 125 °C 3: HCl conc. / ethanol / 6 h / Heating View Scheme

hydrogenchloride in ethanol 6 h; Heating; Yield given;