1: 37 percent / Li/Na / hexane; tetrahydrofuran / 1.5 h / 50 °C / sonication 2: 87 percent / H2 / 10percent Pd/C / cyclohexane / 15 h / 50 °C / 12001 Torr 3: 81 percent / TsOH*H2O / benzene / 2 h / Heating 4: 95 percent / H2 / 10percent Pd/C / cyclohexane / 15 h / 50 °C / 12001 Torr View Scheme

lithium-sodium alloy in tetrahydrofuran; hexane T=50°C; 1.5 h; sonication; Further byproducts given;