1.1: 60 percent / 1,4-dicyanonaphthalene / propan-2-ol / 1.5 h / UV-irradiation 2.1: 9-BBN / tetrahydrofuran / 20 h / 20 °C 2.2: 45 percent / NaOH; aq. H2O2 / tetrahydrofuran / 4 h / 0 - 20 °C 3.1: 100 percent / aq. HCl / methanol / 1 h / 20 °C 4.1: 95 percent / H2 / 20 percent Pd(OH)2/C / ethanol / 10 h / 20 °C / 3878.61 Torr View Scheme