Br2 i) Acetic Acid

Chemistry
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ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
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### Example of Bromination Reaction in Organic Chemistry

#### Reaction Sequence:

1) Starting Material: Cyclohexanone (a six-membered ring with a ketone functional group)

   **Chemical Structure:** ![Cyclohexanone Structure](URL) 
      - A cyclohexane ring with a double-bonded oxygen (O) attached to one of the carbons in the ring.

2) Reagent and Solvent:
   - **Bromine (Br₂)**
   - **Acetic Acid (CH₃COOH)**

#### Reaction Description:

- **Reagent:** Bromine (Br₂)
- **Solvent:** Acetic Acid

This depicts a bromination reaction where cyclohexanone is treated with bromine (Br₂) in the solvent acetic acid. 

**Note:** The product of this reaction is not shown in the image but typically involves the substitution of a hydrogen atom by a bromine atom at the alpha position relative to the carbonyl group in organic compounds.

### Explanation of Bromination Reaction:

- **Step 1:** Activation of Bromine
  - The bromine molecule reacts with acetic acid, generating a more reactive electrophilic bromine species.
  
- **Step 2:** Alpha-Bromination
  - The reactive bromine species attacks the alpha position of cyclohexanone, resulting in the substitution of a hydrogen atom with a bromine atom. This step typically proceeds through the formation of a bromonium ion intermediate.

**Applications:**

Bromination reactions are widely used in synthetic organic chemistry to introduce bromine atoms into molecules, which can further be utilized for various functional group transformations and synthesis of complex organic compounds.
Transcribed Image Text:### Example of Bromination Reaction in Organic Chemistry #### Reaction Sequence: 1) Starting Material: Cyclohexanone (a six-membered ring with a ketone functional group) **Chemical Structure:** ![Cyclohexanone Structure](URL) - A cyclohexane ring with a double-bonded oxygen (O) attached to one of the carbons in the ring. 2) Reagent and Solvent: - **Bromine (Br₂)** - **Acetic Acid (CH₃COOH)** #### Reaction Description: - **Reagent:** Bromine (Br₂) - **Solvent:** Acetic Acid This depicts a bromination reaction where cyclohexanone is treated with bromine (Br₂) in the solvent acetic acid. **Note:** The product of this reaction is not shown in the image but typically involves the substitution of a hydrogen atom by a bromine atom at the alpha position relative to the carbonyl group in organic compounds. ### Explanation of Bromination Reaction: - **Step 1:** Activation of Bromine - The bromine molecule reacts with acetic acid, generating a more reactive electrophilic bromine species. - **Step 2:** Alpha-Bromination - The reactive bromine species attacks the alpha position of cyclohexanone, resulting in the substitution of a hydrogen atom with a bromine atom. This step typically proceeds through the formation of a bromonium ion intermediate. **Applications:** Bromination reactions are widely used in synthetic organic chemistry to introduce bromine atoms into molecules, which can further be utilized for various functional group transformations and synthesis of complex organic compounds.
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