Ph–C≡C–CH 3 + H₂O H g SO 4 H 2 S O 4 ( A ) . A is

Question

Ph–C≡C–CH 3 + H₂O H g SO 4 H 2 ​ S O 4 ​ ​ ( A ) . A is

TestHub · Accepted Answer

Step 1: Addition of water to the alkyne

$P h - C \equiv C - C H_{3} + H_{2} O H g S O_{4} H_{2} S O_{4} P h - C (O H) = C H - C H_{3}$

This intermediate is an enol (Ph-C(OH)=CH-CH₃).

Step 2: Tautomerization of the enol to a ketone

$P h - C (O H) = C H - C H_{3} ⇌ P h - C (= O) - C H_{2} - C H_{3}$

The final product (A) is 1-phenylpropan-1-one (propiophenone).

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