Determine the major product(s) of the following reaction: Br Br2 FeBr3 Br Br Br Br Br Br FeBr2

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Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
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**Determine the Major Product(s) of the Following Reaction:**

### Reaction Equation:
![Bromobenzene Reacting with Br2 in Presence of FeBr3 Catalyst](URL-to-reaction-equation-image-if-applicable)
Starting from a bromobenzene molecule, when it reacts with Br2 (bromine) in the presence of a catalyst FeBr3 (iron(III) bromide), determine the major product(s) formed.

### Possible Products:

#### Option 1:
![Product 1 Structure](URL-to-product-1-image-if-applicable)
- **Description:** A benzene ring with two bromine atoms (Br) attached at the 1st and 2nd positions (ortho positions).

#### Option 2:
![Product 2 Structure](URL-to-product-2-image-if-applicable)
- **Description:** A benzene ring with two bromine atoms (Br) attached at the 1st and 4th positions (para positions).

#### Option 3:
![Product 3 Structure](URL-to-product-3-image-if-applicable)
- **Description:** A benzene ring with two bromine atoms attached at the 1st and 3rd positions (meta positions), and FeBr2 also appears in the product. 

### Explanation:
When bromobenzene reacts with bromine (Br2) in the presence of a catalyst like FeBr3, the reaction is a typical electrophilic aromatic substitution. The bromine atom already attached to the benzene ring directs the incoming bromine to the ortho and para positions due to its electron-donating effects and its influence on the electron density of the benzene ring. 

Thus, the major products are usually the ortho and para substituted bromobenzenes:

1. **Ortho product:** benzene with bromines at positions 1 and 2.
2. **Para product:** benzene with bromines at positions 1 and 4.

Among these, para product is generally more stable and predominant due to steric hindrance being minimal compared to ortho substitution.

**Note:** Meta substitution is not favored in this reaction with the given reagents and conditions.

### Conclusion:
The major product of this reaction is likely the benzene ring with bromines at the 1st and 4th positions (para position).
Transcribed Image Text:**Determine the Major Product(s) of the Following Reaction:** ### Reaction Equation: ![Bromobenzene Reacting with Br2 in Presence of FeBr3 Catalyst](URL-to-reaction-equation-image-if-applicable) Starting from a bromobenzene molecule, when it reacts with Br2 (bromine) in the presence of a catalyst FeBr3 (iron(III) bromide), determine the major product(s) formed. ### Possible Products: #### Option 1: ![Product 1 Structure](URL-to-product-1-image-if-applicable) - **Description:** A benzene ring with two bromine atoms (Br) attached at the 1st and 2nd positions (ortho positions). #### Option 2: ![Product 2 Structure](URL-to-product-2-image-if-applicable) - **Description:** A benzene ring with two bromine atoms (Br) attached at the 1st and 4th positions (para positions). #### Option 3: ![Product 3 Structure](URL-to-product-3-image-if-applicable) - **Description:** A benzene ring with two bromine atoms attached at the 1st and 3rd positions (meta positions), and FeBr2 also appears in the product. ### Explanation: When bromobenzene reacts with bromine (Br2) in the presence of a catalyst like FeBr3, the reaction is a typical electrophilic aromatic substitution. The bromine atom already attached to the benzene ring directs the incoming bromine to the ortho and para positions due to its electron-donating effects and its influence on the electron density of the benzene ring. Thus, the major products are usually the ortho and para substituted bromobenzenes: 1. **Ortho product:** benzene with bromines at positions 1 and 2. 2. **Para product:** benzene with bromines at positions 1 and 4. Among these, para product is generally more stable and predominant due to steric hindrance being minimal compared to ortho substitution. **Note:** Meta substitution is not favored in this reaction with the given reagents and conditions. ### Conclusion: The major product of this reaction is likely the benzene ring with bromines at the 1st and 4th positions (para position).
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