1: H2 / Pd-C / ethanol / 1551.4 Torr / Ambient temperature 2: conc. HCl / 0 °C 3: H2SO4, CuSO / Ambient temperature 4: 1.) BF3*Et2O, HgO (red) 2.) NaBH4 / 1.) THF, r.t. 2.) EtOH, r.t. 5: Ph3P, CCl4 / Heating 6: LiOH / H2O; 1,2-dimethoxy-ethane / Ambient temperature 7: LDA / tetrahydrofuran / -25 °C 8: NaH / tetrahydrofuran / Ambient temperature 9: 1.5 N HCl / H2O; tetrahydrofuran / Ambient temperature 10: diethyl ether 11: benzene / Ambient temperature 12: CuCl, TMEDA, O2 / acetone / 0.02 h / Ambient temperature 13: DDQ / H2O; CH2Cl2 / Ambient temperature 14: n-Bu4NF / tetrahydrofuran; acetic acid View Scheme