Step 1: Understanding the Reaction Sequence The given sequence involves the following transformations: 1. Ozonolysis Reaction: - The initial alkene undergoes ozonolysis in the presence of \( O_3 \) followed by reduction with Zn/H\(_2\)O. - This leads to the formation of an aldehyde and a ketone. 2. Addition of HBr in the Presence of Peroxides: - The anti-Markovnikov addition of HBr to the alkene forms a primary alkyl halide (X) via the free radical mechanism. 3. Formation of Grignard Reagent and Carboxylation: - The alkyl halide reacts with Mg in dry ether to form a Grignard reagent (RMgX). - When treated with CO\(_2\), the Grignard reagent forms a carboxylate intermediate, which upon hydrolysis gives a primary carboxylic acid (Y).
Step 2: Identifying the Product (Y) - The final product is a primary carboxylic acid, corresponding to option (4).
