1: 35 percent / HCl / ethanol / 70 h / Ambient temperature 2: 95.2 percent / 10percent aq. NaOH / 0.5 h / Heating View Scheme

N-benzyl-trimethylammonium hydroxide in tetrahydrofuran 4 h; Heating;

1: 1) POCl3 / 1) RT, 4 h, 2) 1,2-dichloroethane, 40 h 2: 50 percent / 1) POCl3 / 1) 1,2-dichloroethane, reflux, 30 min, 2) 50-60 deg C, 2 h 3: 60 percent / triton B / tetrahydrofuran / 4 h / Heating View Scheme

1: 50 percent / 1) POCl3 / 1) 1,2-dichloroethane, reflux, 30 min, 2) 50-60 deg C, 2 h 2: 60 percent / triton B / tetrahydrofuran / 4 h / Heating View Scheme

1: 1) POCl3 / 1) RT, 4 h, 2) 1,2-dichloroethane, 40 h 2: 50 percent / 1) POCl3 / 1) 1,2-dichloroethane, reflux, 30 min, 2) 50-60 deg C, 2 h 3: 60 percent / triton B / tetrahydrofuran / 4 h / Heating View Scheme