The major product obtained in the following r | vedclass

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(A) $DIBAL-H$ (Diisobutylaluminium hydride) is a selective reducing agent. It is commonly used to reduce esters or lactones (cyclic esters) to aldehyd

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(A) $DIBAL-H$ (Diisobutylaluminium hydride) is a selective reducing agent. It is commonly used to reduce esters or lactones (cyclic esters) to aldehydes. In the given reaction,the lactone ring is opened and reduced to an aldehyde group,while the hydroxyl group is formed at the position where the oxygen was attached to the ring. The carboxylic acid group $(-COOH)$ remains unaffected under these specific reaction conditions.

The major product obtained in the following reaction is:

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