How would you convert the following compounds into benzene?
Benzene from Ethyne: When acetylene is heated in the red-hot iron tube at 873 K, benzene is obtained.
Benzene from Ethene: Ethene was first converted into 1,2-dibromoethane by the action of bromine, tetrachloromethane. Then it is treated with alc. KOH to form bromoethene which will further react with NaNH2/liq.NH3 to form ethyne. After that ethyne is heated in the red-hot iron tube at 873 K, benzene is obtained.
Hexane to Benzene: Hexane undergoes pyrolysis in presence of chromium oxide catalyst and at high temperature and pressure, it forms benzene.