The reaction involves a Grignard reagent (RMgBr) reacting with a carbonyl compound. When a Grignard reagent adds to a carbonyl group, it forms an alkoxide intermediate which upon hydrolysis gives an alcohol. However, if the product undergoes further oxidation or if the starting material is an ester or acid derivative, a ketone can be formed.
In this reaction sequence, the Grignard reagent adds to form an intermediate that, after workup, yields a ketone structure. The correct structure A is the one showing a ketone functional group (C=O) with the appropriate R group attached.
Based on the reaction mechanism and the given options, option (C) represents the correct ketone structure.
JEE Main · 2022 · 27 Jul 2022 · Shift 2 · Single correct option
