1: 76 percent / tin(IV) chloride / CH2Cl2 / 1.5 h / Ambient temperature 2: 91 percent / 95percent hydrazine hydrate, potassium hydroxide / ethane-1,2-diol / 4.5 h / 60 °C / Heating 3: 85 percent / Raney nickel-aluminium alloy / aq. NaOH / 3 h / 90 - 120 °C 4: 93 percent / lithium aluminium hydride / diethyl ether / 1.) RT, 1.5 h, 2.) reflux, 1h View Scheme

1: 76 percent / tin(IV) chloride / CH2Cl2 / 1.5 h / Ambient temperature 2: 91 percent / 95percent hydrazine hydrate, potassium hydroxide / ethane-1,2-diol / 4.5 h / 60 °C / Heating 3: 85 percent / Raney nickel-aluminium alloy / aq. NaOH / 3 h / 90 - 120 °C 4: 93 percent / lithium aluminium hydride / diethyl ether / 1.) RT, 1.5 h, 2.) reflux, 1h View Scheme

1: 85 percent / Raney nickel-aluminium alloy / aq. NaOH / 3 h / 90 - 120 °C 2: 93 percent / lithium aluminium hydride / diethyl ether / 1.) RT, 1.5 h, 2.) reflux, 1h View Scheme

1: 91 percent / 95percent hydrazine hydrate, potassium hydroxide / ethane-1,2-diol / 4.5 h / 60 °C / Heating 2: 85 percent / Raney nickel-aluminium alloy / aq. NaOH / 3 h / 90 - 120 °C 3: 93 percent / lithium aluminium hydride / diethyl ether / 1.) RT, 1.5 h, 2.) reflux, 1h View Scheme

1: Al2O3 / 350 °C 2: (i) B2H6, (ii) (heating), (iii) aq. H2O2, aq. NaOH View Scheme

2: Al2O3 / 350 °C 3: (i) B2H6, (ii) (heating), (iii) aq. H2O2, aq. NaOH View Scheme

2: Al2O3 / 350 °C 3: (i) B2H6, (ii) (heating), (iii) aq. H2O2, aq. NaOH View Scheme

(i) B2H6, (ii) (heating), (iii) aq. H2O2, aq. NaOH; Multistep reaction;

Hydrogenation;