By treating CO2 with Grignard's reagent, the following compound is obtained;
Correct answer: C. Carboxylic acid
- A. Aromatic compounds
- B. Alcohols
- C. Carboxylic acid
- D. Ethers
Explanation
When carbon dioxide (CO₂) reacts with a Grignard reagent (RMgX), a carboxylic acid is formed. The Grignard reagent acts as a nucleophile, attacking the electrophilic carbon in CO₂. After the addition of the Grignard reagent, the intermediate is hydrolyzed, resulting in the formation of a carboxylic acid and a magnesium salt.
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About Nomenclature, Structure and Preparation
Carboxylic acids are prepared by oxidising primary alcohols or aldehydes, hydrolysing nitriles, esters and amides, and carbonating suitable organometallic compounds. Their structures, IUPAC naming, resonance stabilisation and acidic character explain why carboxylic acids differ from alcohols and phenols, despite all containing oxygen and hydrogen.
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