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  4. 3-methyl-2-butanol on treatment with HCl gives predominantly

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Q. $3$-methyl-$2$-butanol on treatment with $HCl$ gives predominantly

AMUAMU 2001

Solution:

$3$-methyl-$2$-butanol on treatment with $HCl$ gives $2$-chloro-$2$-methyl butane. In this reaction a secondary carbocation is formed which changes to tertiary carbocation by rearrangement. Because tertiary carbocation is more stable than secondary carbocation. The mechanism of reaction is as
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