Question

In the following reaction,

H₃C — C ≡ C — H 

X and Y, respectively, are

Answer 1

Answer is : 

 

In first step one molecule of water adds to alkyne on warming with mercuric sulphate and dilute sulphuric acid to form carbonyl compound, i.e. acetone. In second step 2 molecules of acetone condense in presence of dil. NaOH to form α, β -unsaturated ketone. This reaction is known as aldol condensation.