why we cant prepare methane by wurtz reaction
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Answer:
Why can't methane be prepared by the Wurtz reaction?
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Wurtz reaction is suitable for symmetrical alkane at product side with same kind of alkyl halide (primary and secondary alkyl halide only) at reactant side(because if different alkyl halide are taken then mixture of different alkane are formed which is difficult to separate). So from this reaction there will be formation of alkane with at least one C-C bond.But methane has no any such bond(i.e. has only C-H bond). R-X + 2Na + X-R → R-R + 2NaX in presence of dry ether.
Hence methane cannot be prepared from Wurtz reaction.
Explanation:
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Methane cannot be synthesized via the Wurtz reaction since the product of an organic coupling reaction must have at least two carbon atoms. The Wurtz coupling method generally fails when tertiary alkyl halides are used.