When Phenol reacts with formaldehyde, which of the following product is produced?
Correct answer: A. Adduct
- A. Adduct
- B. Hydronium ion
- C. Oxonium ion
- D. Phenoxide ion
Explanation
The reaction between phenol and formaldehyde is known as the Mannich reaction. It involves the condensation of a phenol molecule with formaldehyde and an amine or ammonia derivative. The reaction typically occurs under acidic conditions. In this reaction, the formaldehyde molecule undergoes a nucleophilic addition to the phenol, resulting in the formation of an adduct. The adduct contains a substituted hydroxymethyl group (-CH2OH) attached to the phenol ring.
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About Aldehydes and Ketones
Aldehydes and ketones contain the polar carbonyl group, but aldehydes are generally more readily oxidised and more reactive than ketones. Coverage includes preparation by oxidation or reduction routes, nucleophilic addition of reagents such as hydrogen cyanide and bisulfite, and tests that distinguish aldehydes from ketones.
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