in ethanol; water a) r.t., 3 h, b) reflux, 2 h;

1: 65 percent / AcCl / a) r.t., 2 h, b) 50 to 52 deg C, 4 h 2: 65 percent / ethanol; H2O / a) r.t., 3 h, b) reflux, 2 h View Scheme

1: 75 percent / ethanol / 2 h / Heating 2: 65 percent / AcCl / a) r.t., 2 h, b) 50 to 52 deg C, 4 h 3: 65 percent / ethanol; H2O / a) r.t., 3 h, b) reflux, 2 h View Scheme

1: 75 percent / ethanol / 2 h / Heating 2: 65 percent / AcCl / a) r.t., 2 h, b) 50 to 52 deg C, 4 h 3: 65 percent / ethanol; H2O / a) r.t., 3 h, b) reflux, 2 h View Scheme