hydrogen; palladium on activated charcoal in methanol P=760 Torr; Ambient temperature;

1: Na2WO4*2H2O, urea*H2O2 / methanol / 0.25 h / Ambient temperature 2: K2CO3, tetra-n-butylammonium bromide / benzene / Ambient temperature 3: 1.) n-BuLi / 1.) THF, 0 deg C, 15 min, 2.) THF 4: 90 percent / H2 / 10percent Pd/C / methanol / 760 Torr / Ambient temperature View Scheme

1: K2CO3, tetra-n-butylammonium bromide / benzene / Ambient temperature 2: 1.) n-BuLi / 1.) THF, 0 deg C, 15 min, 2.) THF 3: 90 percent / H2 / 10percent Pd/C / methanol / 760 Torr / Ambient temperature View Scheme

1: 1.) n-BuLi / 1.) THF, 0 deg C, 15 min, 2.) THF 2: 90 percent / H2 / 10percent Pd/C / methanol / 760 Torr / Ambient temperature View Scheme

1: 1.) n-BuLi / 1.) THF 2: 60 percent / H2 / 10percent Pd/C / Ambient temperature View Scheme

1: 83 percent Turnov. / H2O / 1.) 3h, 0 deg C, 2.) up to RT 2: 1.) butyllithium 3: 67 percent / sodium borohydride / ethanol; tetrahydrofuran / Heating View Scheme

1: 1.) butyllithium 2: 67 percent / sodium borohydride / ethanol; tetrahydrofuran / Heating View Scheme

1: 1.) n-BuLi / 1.) THF 2: 60 percent / H2 / 10percent Pd/C / Ambient temperature View Scheme