1: 83 percent / H2O / 1 h / 80 °C 2: 87 percent / triethylamine / toluene / 6 h / 95 °C / r.t., overnight 3: H2 / PtO2 / ethyl acetate / 3.5 h / Ambient temperature 4: H2 / PtO2 / acetic acid; ethyl acetate / 1.5 h / Ambient temperature 5: 90 percent / triethylamine / tetrahydrofuran / Ambient temperature; overnight 6: 96 percent / H2 / 5percent Pd-on-carbon / acetic acid; ethanol / 1.5 h / 40 °C / 2280 Torr 7: 1M diborane / tetrahydrofuran / 1 h / Heating View Scheme

in water T=80°C; 1 h;