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  4. In Williamson synthesis if tertiary alkyl halide is used than

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Q. In Williamson synthesis if tertiary alkyl halide is used than

VITEEEVITEEE 2018

Solution:

If a tertiary alkyl halide is used, an alkene is the only reaction product and no ether is formed. For example, the reaction of $CH_3ONa$ with $(CH_3)3C -Br$ gives exclusively $2$-methylpropene.
It is because alkoxides are not only nucleophiles but strong bases as well. They react with alkyl halides leading to elimination reactions.

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