Question

$PhC\equiv CMe\stackrel{H_3{O}^{+},H{g}^{2+}}{\to }$?

Identify the product in the reaction.

• A. $PhC{H}_{2}C{H}_{2}CHO$
• B. $PhCOC{H}_{2}C{H}_3$
• C. $PhC{H}_{2}COC{H}_3$
• D. $PhCOCOMe$

Answer 1

Answer: (B)

$PhCOC{H}_{2}C{H}_3$

Alkynes are converted into ketones on reaction with $H{g}^{+2}$ (mild oxidising agent) in presence of acid hydrolysis.