1: 1.) Mg / 1.) ether, 2.) ether, 20 deg C, 3 h; reflux, 12 h 2: 80 percent / acetonitrile / 1.) reflux, 3 h, 2.) 20 deg C, 12 h 3: 77 percent / aq. ethanol / 22 h / 20 °C View Scheme