1: m-chloroperbenzoic acid 2: 21 percent / n-butyllithium / hexane; tetrahydrofuran / 0.5 h / -78 °C 3: HgO, BF3-etherate / tetrahydrofuran; H2O / 0.75 h / Ambient temperature 4: pyridine / diethyl ether / 0.5 h / 0 °C 5: 0.67 h / 100 - 110 °C 6: sodium hydride / tetrahydrofuran; paraffin / 0.17 h / 0 - 25 °C 7: 99 percent / H2, NaHCO3 / 10 percent Pd-C / dioxane / 3 h 8: 1.) LDA / 1.) THF, -78 deg C, 1 h; 2.) -78 deg C to RT 9: 1.) zinc acetate; 2.) 5 percent KOH / 1.) acetic acid, reflux, 1 h; 2.) MeOH, reflux, 0.5 h 10: N,N-diethylcyclohexylamine / dioxane / 2 h / 60 °C 11: LiAlH4 / diethyl ether / 1 h / 0 °C 13: (n-Bu)3SnH / toluene / 3 h / Heating 14: 2 N HCl / tetrahydrofuran / 1 h / Ambient temperature View Scheme