Question
Question: The given reaction involves two steps: reduction and cyclization....
The given reaction involves two steps: reduction and cyclization.
Answer
The final product is isochroman.
Explanation
Solution
The starting diester is first reduced by LiAlH₄ to a diol. The two ester groups are converted to primary alcohol groups. Then, the diol undergoes intramolecular dehydration in the presence of concentrated H₂SO₄, forming a stable 6-membered cyclic ether (isochroman) fused to the benzene ring.