1: Raney nickel; aqueous NaOH / Hydrogenation 2: aqueous H2SO4; aqueous NaNO2 / 90 - 95 °C 3: sodium borate; aluminium chloride; O,O'-dimethyl-diethylene glycol View Scheme

1: H2O; aqueous NaNO2 / 70 °C 2: aluminium chloride; sodium borate; dimethyl ether View Scheme

1: Raney nickel; aqueous NaOH / Hydrogenation 2: aqueous H2SO4; aqueous NaNO2 / 90 - 95 °C View Scheme

sodium hydroxide; nickel Hydrogenation;