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Neopentyl alcohol reacts with concentrat...

Neopentyl alcohol reacts with concentrated `HBr` to give 2-bromo-2-methylbutane. Write the mechanism for the formation of this product.

Text Solution

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`CH_(3)-underset("Neopentyl alcohol")underset(CH_(3))underset(|)overset(CH_(3)) overset(|)C-CH_(2)OH overset(H^(+)) hArr CH_(3)- underset(CH_(3))underset(|) overset(CH_(3)) overset(|)C-CH_(2) overset(+)OH_(2) hArr CH_(3)- underset(1^(@)-"Carbocation")underset(CH_(3))underset(|) overset(CH_(3)) underset(|)(C)-overset(+)CH_(2)`
A methyl shift changea `1^(@)` carbocation to a stable `3^(@)` carbocation.
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