CH_3-C(CH_3)(OH)-C(CH_3)(OH)-CH_3 xrightarrow | vedclass

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(B) The reaction is an example of the Pinacol-Pinacolone rearrangement.In the presence of an acid $(H^{+})$,$2,3$-dimethylbutane-$2,3$-diol (Pinacol)

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$3,3-$dimethylbutan$-2-$one (structure)

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(B) The reaction is an example of the Pinacol-Pinacolone rearrangement.In the presence of an acid $(H^{+})$,$2,3$-dimethylbutane-$2,3$-diol (Pinacol) undergoes dehydration and rearrangement to form $3,3$-dimethylbutan-$2$-one (Pinacolone).The mechanism involves the protonation of one of the hydroxyl groups,followed by the loss of a water molecule to form a carbocation.Then,a methyl group shifts to the adjacent carbon atom,followed by the loss of a proton to form the final ketone product,$CH_3-CO-C(CH_3)_3$.

List-$I$ (Reagents)	List-$II$ (Reaction Name)
$A$. $H_2, Pd-BaSO_4$	$I$. Etard Reaction
$B$. $SnCl_2, HCl$	$II$. Rosenmund Reduction
$C$. $CrO_2Cl_2, CS_2$	$III$. Gatterman-Koch Reaction
$D$. $CO, HCl, \text{Anhyd. } AlCl_3$	$IV$. Stephen Reaction

$CH_3-C(CH_3)(OH)-C(CH_3)(OH)-CH_3 \xrightarrow[H^{+}]{\Delta} ?$

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