The reaction of 2,2-dimethyltetrahydrofuran w | vedclass

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(B) The reaction of an ether with $HBr$ involves the protonation of the oxygen atom by $H^+$,followed by the cleavage of the $C-O$ bond. In the case o

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$5-$bromo$-2-$methylpentan$-2-$ol

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(B) The reaction of an ether with $HBr$ involves the protonation of the oxygen atom by $H^+$,followed by the cleavage of the $C-O$ bond. In the case of $2,2-$dimethyltetrahydrofuran,the protonation of the oxygen atom creates a good leaving group. The $C-O$ bond cleavage occurs at the more substituted carbon atom (the tertiary carbon) to form a stable tertiary carbocation intermediate. Finally,the nucleophilic bromide ion $(Br^-)$ attacks the tertiary carbocation to form $5-$bromo$-2-$methylpentan$-2-$ol.

The reaction of $2,2-$dimethyltetrahydrofuran with $HBr$ gives:

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