Question

What is the structure of C ?

• A.
• B.
• C.
• D.

Answer 1

The Correct Option is A

The given chemical reaction involves a sequence of reactions starting with a Friedel-Crafts acylation, followed by a Clemmensen reduction, and concluding with dehydration.

1. In the first step, benzene undergoes Friedel-Crafts acylation with succinic anhydride, facilitated by the catalyst \(\text{AlCl}_3\). This reaction introduces an acyl group (in this case, a succinyl group) to the benzene ring, forming compound A.
2. Next, compound A undergoes Clemmensen reduction, which reduces the carbonyl group into a methylene group (\(\text{—CH}_2—\)). This step uses zinc amalgam (Zn-Hg) and hydrochloric acid (HCl), transforming compound A into compound B.
3. The final step involves the dehydration of the intermediate compound B using concentrated sulfuric acid (\(\text{H}_2\text{SO}_4\)), resulting in the formation of compound C. This reaction typically removes a water molecule, leading to the formation of a double bond in the molecule structure.

Based on these reactions, compound C would be the final product of this series of transformations.

The correct structure of compound C matches the given option: Structure 1.

Thus, the final structure of compound C is represented by Structure 1, confirming it as the correct answer.

Answer 2

Thus the correct answer is Option 1.