What will be the major product of the given r | vedclass

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(D) The given reaction is an acid-catalyzed rearrangement of a cross-conjugated dienone,known as the Dienone-Phenol rearrangement.$1$. The oxygen atom

Vedclass · Accepted Answer

$3-$ethyl$-4-$methylphenol

Vedclass · Answer

(D) The given reaction is an acid-catalyzed rearrangement of a cross-conjugated dienone,known as the Dienone-Phenol rearrangement.$1$. The oxygen atom of the carbonyl group gets protonated by $H_3O^+$.$2$. This increases the electrophilicity of the carbonyl carbon.$3$. $A$ $1,2-$shift occurs where one of the alkyl groups (methyl or ethyl) migrates to the adjacent carbon to restore aromaticity.$4$. The ethyl group has a higher migratory aptitude than the methyl group.$5$. Upon migration of the ethyl group,the system aromatizes to form a substituted phenol.$6$. The resulting product is $4-$ethyl$-4-$methylcyclohexa$-2,5-$dien$-1-$one rearranging to $4-$ethyl$-3-$methylphenol (or similar depending on the specific migration path). However,looking at the options provided,the migration of the ethyl group leads to the formation of $4-$ethyl$-3-$methylphenol.

What will be the major product of the given reaction?

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