barium dihydroxide

1: 2.2 g / H2 / Pd/C / ethanol / 20 °C 2: 1.22 g / MeONa / methanol / 1.5 h / 25 °C View Scheme

1: 62 percent / SnCl4 / 1,2-dichloro-ethane / 1 h / 20 °C 2: 2.2 g / H2 / Pd/C / ethanol / 20 °C 3: 1.22 g / MeONa / methanol / 1.5 h / 25 °C View Scheme

barium dihydroxide; ethanol; ammonium chloride Reagenz Nr. 4: Wasser;

1: 89 percent / 50percent sodium hydride / tetrahydrofuran / 1 h / Ambient temperature 2: 80 percent / boron trifluoride etherate / CH2Cl2 / 2 h / Ambient temperature 3: 1.)sodium hydride / 1.) THF, 1 h, 2.) RT, 24 h 4: 96 percent / α,α-azobisisobutyronitrile, tributyltin hydride / toluene / 18 h / Heating 5: red mercuric oxide, boron trifluoride / acetone; H2O; tetrahydrofuran / 20 h 6: 80 percent / benzene / 10 h / Heating 7: 90 percent / H2 / W2 Raney nickel / ethanol / 18 h / Ambient temperature 8: Et3N / CH2Cl2 / 4 h / 0 °C 9: 70 percent / sodium sulfide nonahydrate, sulfur / dimethylformamide / 24 h / 90 °C 10: 75 percent / 1.) 0.1M potassium hydroxide, 2.) 5M HCl / ethanol / 24 h / Ambient temperature View Scheme