PPA T=80°C; 3 h;

1: 1.) magnesium ethoxide / 1.) toluene, reflux, 2 h, 2.) acetonitrile, room temp., 3 h 2: 37 percent / ethanol / 16 h / Heating 3: 76 percent / PPA / 3 h / 80 °C View Scheme

1: 1.) magnesium ethoxide / 1.) toluene, reflux, 2 h, 2.) acetonitrile, room temp., 3 h 2: 37 percent / ethanol / 16 h / Heating 3: 76 percent / PPA / 3 h / 80 °C View Scheme

1: 37 percent / ethanol / 16 h / Heating 2: 76 percent / PPA / 3 h / 80 °C View Scheme