JEE Main Chemistry question

With the help of the following Grignard synthesis, which carboxylic acid is formed?

(A)A straight-chain acid matching the given Grignard precursor after CO₂ addition and hydrolysisCorrect
(B)An aldehyde isomer, not an acid
(C)An alcohol isomer, not an acid
(D)An unrelated branched acid

Answer: (A)

Solution

A Grignard reagent, RMgX, reacts with CO₂ to give, after acidic workup, the carboxylic acid RCOOH, one carbon longer than R and bearing the acid group exactly where the Grignard's carbanion carbon was — the standard Grignard carboxylation route to carboxylic acids.

*Note: the sp

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Question ID VK-149445