in tetrahydrofuran 1.) -60 deg C, 30 min, 2.) from -60 deg C to RT, 1 h,;

dihydrogen hexachloroplatinate T=100°C; 6 h;

dihydrogen hexachloroplatinate T=100°C;

1: 66 percent Chromat. / NaOH / 0.5 h / Heating 2: 56 percent / H2 / 5percent Pd/Al2O3 / hexane / 6 h / 760 Torr / Ambient temperature 3: 62 percent / LiAlH4, 18-crown-6 / hexane / 6 h / 60 °C 4: 60 percent / 5percent Pd/Al2O3 / hexane / 6 h / Ambient temperature View Scheme