1: 95 percent / hydrogen / platinum oxide / 2 h / 2068.6 Torr 2: 78 percent / sodium hydroxide / toluene / 0 °C 3: 88 percent / sodium hydride / N,N-dimethyl-acetamide / 1.) RT, 12 h, 2.) 30 min 4: diisopropylamine, n-butyllithium / tetrahydrofuran; hexane / 1.) -78 deg C, 90 min, 2.) RT, 90 min 5: 28 percent / palladium-on-charcoal / xylene / 1 h / Heating View Scheme