13.20     How would you convert the following compounds into benzene?

         (ii)      Ethene 

Answers (1)
M manish

By converting ethene to ethyene by reacting with bromine in the presence of carbon tetrachloride. And then heating in presence of alc. KOH followed by NaNH_{2}/liq.\ NH_{3}. Cyclic polymerisation of ethyne gives us benzene.

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