Other than the aromatic ring, what functional group is present in the major organic product of the following reaction? Ophenol Oketone O aldehyde carboxylic acid + KMnO4 H₂O

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Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
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**Organic Chemistry Reaction Analysis**

**Question:**  
Other than the aromatic ring, what functional group is present in the major organic product of the following reaction?

**Reaction:**

The given reactions include:

1. A benzene ring with a side chain:  
   \[
   \begin{array}{c}
   \text{Benzene Ring-CH}_2\text{CH}_2\text{CH}_2\text{OH}
   \end{array}
   \]

2. The side chain undergoes oxidation in the presence of potassium permanganate (KMnO₄) and water (H₂O).

**Visual Representation:**

- Reactant:  
  ![Benzene ring with side chain](image)

- Oxidizing agent: + KMnO₄      
- Solvent: in H₂O  
- Reaction direction: follows the arrow

**Options:**
- O phenol
- O ketone
- O aldehyde
- O carboxylic acid

**Explanation:**

In the reaction, an alkylbenzene (a benzene ring with an alkyl side chain) reacts with potassium permanganate (KMnO₄) in water (H₂O). Potassium permanganate is a strong oxidizing agent that can oxidize alkyl side chains on benzene rings to carboxylic acid groups. Therefore, the side chain in the reagent -CH₂-CH₂-CH₂-OH will be oxidized to -COOH.

**Correct Answer:**
- O carboxylic acid
Transcribed Image Text:**Organic Chemistry Reaction Analysis** **Question:** Other than the aromatic ring, what functional group is present in the major organic product of the following reaction? **Reaction:** The given reactions include: 1. A benzene ring with a side chain: \[ \begin{array}{c} \text{Benzene Ring-CH}_2\text{CH}_2\text{CH}_2\text{OH} \end{array} \] 2. The side chain undergoes oxidation in the presence of potassium permanganate (KMnO₄) and water (H₂O). **Visual Representation:** - Reactant: ![Benzene ring with side chain](image) - Oxidizing agent: + KMnO₄ - Solvent: in H₂O - Reaction direction: follows the arrow **Options:** - O phenol - O ketone - O aldehyde - O carboxylic acid **Explanation:** In the reaction, an alkylbenzene (a benzene ring with an alkyl side chain) reacts with potassium permanganate (KMnO₄) in water (H₂O). Potassium permanganate is a strong oxidizing agent that can oxidize alkyl side chains on benzene rings to carboxylic acid groups. Therefore, the side chain in the reagent -CH₂-CH₂-CH₂-OH will be oxidized to -COOH. **Correct Answer:** - O carboxylic acid
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