Chemistry - Carbonyl compounds Question with Solution | TestHub

The reagent H₂/Pd–BaSO₄ is known for Rosenmund reduction, which converts acid chloride (–COCl) into an aldehyde (–CHO).

In the given compound, the –COCl group is reduced to an aldehyde.

Pd/BaSO₄ is a poisoned catalyst, so it stops reduction at aldehyde (no alcohol formation).

Also, the alkyne (C≡C) undergoes partial hydrogenation, forming a double bond (C=C).

Thus, both changes occur: acid chloride → aldehyde and triple bond → double bond.

Final product contains double bond & aldehyde group → Option (D).