1: 1.) KCN 2.) conc. HCl, AcOH / 1.) H2O, EtOH, room temperature, 6 days 2.) reflux, 72 h 2: acetanhydride / 6 h / Heating 3: AlCl3 / toluene / 1 h / 50 - 60 °C / or benzene 4: diethyl ether 5: 0.5 g / P2O5, H3PO4 / 3 h / 100 °C 6: 0.8 g / LAH / tetrahydrofuran / Heating 7: 0.4 g / Pd/C / 24 h / 360 - 380 °C View Scheme

1: 1.) KCN 2.) conc. HCl, AcOH / 1.) H2O, EtOH, room temperature, 6 days 2.) reflux, 72 h 2: acetanhydride / 6 h / Heating 3: AlCl3 / toluene / 1 h / 50 - 60 °C / or benzene 4: diethyl ether 5: 0.5 g / P2O5, H3PO4 / 3 h / 100 °C 6: 0.8 g / LAH / tetrahydrofuran / Heating View Scheme

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1: 1.) KCN 2.) conc. HCl, AcOH / 1.) H2O, EtOH, room temperature, 6 days 2.) reflux, 72 h 2: acetanhydride / 6 h / Heating 3: AlCl3 / toluene / 1 h / 50 - 60 °C / or benzene View Scheme