Write the product of the following reaction:
`CH_(3)-CH=CH-CH_(2)CN underset((ii)H_(2)O)overset((i)DiBAL-H)to`

Explanation

To determine the product of the given reaction, we will follow these steps:

1. **Identify the Reactants**: The starting compound is CH₃-CH=CH-CH₂CN. This is a 4-carbon chain with a double bond between the second and third carbon atoms, and a cyano group (-CN) attached to the last carbon.

2. **Understand the Reagents**: The first reagent is DiBAL-H (Diisobutylaluminium hydride), which is a mild reducing agent. The second reagent is water (H₂O).

3. **Reaction with DiBAL-H**: DiBAL-H will selectively reduce the cyano group (-CN) to an aldehyde (-CHO) without affecting the double bond. Therefore, the cyano group will be converted to an aldehyde.

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