During the hydration of an alkyne using dilute , is required as a catalyst. The initial stable intermediate formed, which subsequently tautomerizes to a ketone, is:

Question

During the hydration of an alkyne using dilute $H_2SO_4$, $HgSO_4$ is required as a catalyst. The initial stable intermediate formed, which subsequently tautomerizes to a ketone, is:

Prashant Kotian · Accepted Answer

Correct answer: B. The heavy catalyst activates the alkyne, allowing water to add and form an unstable enol (alkene-alcohol). This enol rapidly tautomerizes to the thermodynamically favored keto form.

💡 Solution & Explanation

Practice 22,000+ questions like this