1: 98 percent / second generation Grubb's catalyst / CH2Cl2 / 5 h / Heating 2: benzophenone / 9 h / 0 °C / UV-irradiation 3: 89 percent / H2 / Pd/C / methanol / 24 h / 23 °C 4: LiAlH4 / tetrahydrofuran / 4 h / 0 °C 5: 145 mg / HCl / tetrahydrofuran; H2O / 40 h / 23 °C / pH 2 - 3 6: triphenylphosphine; diisopropyl azodicarboxylate / benzene / 1.5 h / 23 °C 7: 326 mg / LiOH; Et3N / methanol; H2O / 2 h / 23 °C 8: 66 percent / Et3N / acetonitrile / 7 h / 23 °C View Scheme

1: 98 percent / second generation Grubb's catalyst / CH2Cl2 / 5 h / Heating 2: benzophenone / 9 h / 0 °C / UV-irradiation 3: 89 percent / H2 / Pd/C / methanol / 24 h / 23 °C 4: LiAlH4 / tetrahydrofuran / 4 h / 0 °C 5: 145 mg / HCl / tetrahydrofuran; H2O / 40 h / 23 °C / pH 2 - 3 6: triphenylphosphine; diisopropyl azodicarboxylate / benzene / 1.5 h / 23 °C 7: 326 mg / LiOH; Et3N / methanol; H2O / 2 h / 23 °C View Scheme