How many transition states and intermediates | vedclass

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(B) The reaction is an acid-catalyzed hydration of $1$-methyl$-1-$vinylcyclobutane,which involves a carbocation rearrangement. Step $1$: Protonation o

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$4$ transition states and $3$ intermediates

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(B) The reaction is an acid-catalyzed hydration of $1$-methyl$-1-$vinylcyclobutane,which involves a carbocation rearrangement. Step $1$: Protonation of the alkene to form a cyclobutyl carbocation (Intermediate $1$). Step $2$: Ring expansion of the cyclobutyl carbocation to a cyclopentyl carbocation (Intermediate $2$). Step $3$: Nucleophilic attack by $H_2O$ on the cyclopentyl carbocation to form an oxonium ion (Intermediate $3$). Step $4$: Deprotonation to form the final product,$1$-methylcyclopentanol. Since there are $3$ intermediates,there must be $3 + 1 = 4$ transition states. Thus,the reaction involves $4$ transition states and $3$ intermediates.

How many transition states and intermediates will be formed during the course of the following reaction?

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