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Which one of the following three alkyl h...

Which one of the following three alkyl halides does not undergo Wurtz reaction and Why ?
`1 CH_2CH_2Br 2 CH_3 I 3(CH_3)_3CBr`

Text Solution

Verified by Experts

The second step of the Wurtz reaction is an `S_N2` reaction. An `S_N2` reaction is very susceptible to steric effect and so, a `3^@` alkyl halide does not take part in `S_N2` reaction. So, `(CH_3)_3` CBr being a `3^@` alkyl halide does not undergo Wurtz reaction.
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