COMEDK · Chemistry · 27. Aldehydes and Ketones
Identify the Carbonyl compound which will not be formed when hydration of Alkynes is carried out with dil. \(\mathrm{H}_2 \mathrm{SO}_4 / \mathrm{Hg}^{2+}\) at 333 K .
Acetone, Butanal, Ethanal, Butanone.
- A Butanal
- B Butanone
- C Acetone
- D Ethanal
Answer & Solution
Correct Answer
(A) Butanal
Step-by-step Solution
Detailed explanation
Hydration of alkynes in the presence of dil. \(\mathrm{H}_{2}\mathrm{SO}_{4}\) and \(\mathrm{Hg}^{2+}\) follows Markovnikov addition of water to the triple bond, forming an enol intermediate which tautomerizes to a carbonyl compound. For ethyne (\(HC \equiv CH\)), hydration…
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