Answer: The following processes can be used to convert ethanol to propane nitrile.
To make bromoethane, ethanol goes through a bromination reaction first. In the presence of a catalyst known as red P/Br ethanol is transformed to bromo ethane.
CH3 – CH2 – OH + KBrEthanol→redP/BrCH3 – CH2 – BrBromoethane
In the presence of a catalyst known as KCN/ Aq.ethanol, the intermediate product bromoethane is transformed into propane nitrile.
CH3 – CH2 – BrBromoethane→KCN, Aq. ethanolCH3 – CH2 – CNPropanenitrile