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Multiple Choice
Predict the product of the reaction
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1
Identify the functional groups in the starting material. The starting material is an ester, which has a carbonyl group (C=O) adjacent to an ether linkage (O-R).
Recognize the reagent used in the reaction. PhMgI is a Grignard reagent, which is a strong nucleophile and base. It will attack the electrophilic carbon of the carbonyl group.
Predict the first step of the reaction. The Grignard reagent will add to the carbonyl carbon, breaking the C=O double bond and forming an alkoxide intermediate.
Consider the role of NH4Cl. After the Grignard addition, NH4Cl is used to protonate the alkoxide intermediate, resulting in the formation of an alcohol.
Determine the structure of the final product. The reaction will convert the ester into a tertiary alcohol, where the phenyl group from the Grignard reagent is added to the carbonyl carbon, and the original alkoxy group is replaced by a hydroxyl group.