To determine the product A in the given reaction, we must analyze the steps involved:
The reaction initiates with the compound shown in the image, which contains a chlorine atom attached to a cyclohexene ring with two methyl groups. The compound undergoes an aqueous KOH treatment. This step involves a nucleophilic substitution (SN1) or elimination (E1/E2) mechanism. Here, the presence of water and KOH suggests an E2 elimination that results in the formation of an alkene.
Upon elimination of HCl, the most substituted alkene is generally favored due to Zaitsev's rule, leading to the formation of a double bond between the carbon atoms adjacent to the carbon bearing chlorine. The resulting structure is a trisubstituted alkene.
The next step involves hydrolysis. Water treatment typically converts alkenes to alcohols via an addition reaction, forming a tertiary alcohol in this case.
Given these considerations, product A is a tertiary alcohol with a cyclohexane ring where the double bond has been hydrated.
The correct product according to these steps is product (D).
