1: iron; acetic acid 2: palladium/BaCO3; ethanol / Hydrogenation 3: concentrated aqueous HCl 4: aqueous H2SO4; aqueous NaNO2 / 90 - 95 °C 5: sodium borate; aluminium chloride; O,O'-dimethyl-diethylene glycol View Scheme

1: iron; acetic acid 2: platinum; aqueous HCl / Hydrogenation 3: H2O; aqueous NaNO2 / 70 °C 4: aluminium chloride; sodium borate; dimethyl ether View Scheme

1: iron; acetic acid 2: palladium/BaCO3; ethanol / Hydrogenation 3: concentrated aqueous HCl 4: aqueous H2SO4; aqueous NaNO2 / 90 - 95 °C View Scheme

1: iron; acetic acid 2: palladium/BaCO3; ethanol / Hydrogenation 3: concentrated aqueous HCl View Scheme

With  iron; acetic acid