1: Na / methanol / 6 h / 0 °C 2: 38 percent / N2 / xylene / 5 h / Heating 3: 98 percent / 1) KOH, H2O; 2) 5 N HCl / 1) reflux, 1.5 h, MeOH; 2) 0 deg C, MeOH 4: 60 percent / CuO, Cr2O3 / quinoline / 4 h / 190 - 195 °C View Scheme