2. Show the complete mechanisms for the following substitution react reaction arrows for each step. HBr NaSH DMSO H₂O

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**Title: Understanding Substitution Reaction Mechanisms**

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**Exercise 2: Substitution Reaction Mechanisms**

In this exercise, you are required to demonstrate the complete mechanisms for the following substitution reactions and provide the reaction arrows for each step. 

**Reactions:**

1. **Cyclohexanol Reaction:**
   - **Reactant:** Cyclohexanol
   - **Reagent:** HBr
   - **Structure:** Six-membered carbon ring (cyclohexane) with an -OH group attached.

2. **Benzyl Chloride Reaction:**
   - **Reactant:** Benzyl chloride
   - **Reagent:** NaSH
   - **Solvent:** DMSO (Dimethyl sulfoxide)
   - **Structure:** Benzene ring attached to a -CH2Cl group.

3. **Tertiary Butyl Halide Reaction:**
   - **Reactant:** Tertiary butyl halide
   - **Reagent:** H2O
   - **Structure:** Three methyl groups attached to a central carbon, which is also bonded to a halogen.

**Instructions:**
- Use curved arrows to indicate the movement of electron pairs during the reactions.
- Identify the leaving group in each reaction.
- Clearly show the formation of any intermediates or transition states.

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This section is tailored to help students visualize and understand the substitution reaction mechanisms, emphasizing step-by-step electron movement essential for mastering organic chemistry concepts.
Transcribed Image Text:**Title: Understanding Substitution Reaction Mechanisms** --- **Exercise 2: Substitution Reaction Mechanisms** In this exercise, you are required to demonstrate the complete mechanisms for the following substitution reactions and provide the reaction arrows for each step. **Reactions:** 1. **Cyclohexanol Reaction:** - **Reactant:** Cyclohexanol - **Reagent:** HBr - **Structure:** Six-membered carbon ring (cyclohexane) with an -OH group attached. 2. **Benzyl Chloride Reaction:** - **Reactant:** Benzyl chloride - **Reagent:** NaSH - **Solvent:** DMSO (Dimethyl sulfoxide) - **Structure:** Benzene ring attached to a -CH2Cl group. 3. **Tertiary Butyl Halide Reaction:** - **Reactant:** Tertiary butyl halide - **Reagent:** H2O - **Structure:** Three methyl groups attached to a central carbon, which is also bonded to a halogen. **Instructions:** - Use curved arrows to indicate the movement of electron pairs during the reactions. - Identify the leaving group in each reaction. - Clearly show the formation of any intermediates or transition states. --- This section is tailored to help students visualize and understand the substitution reaction mechanisms, emphasizing step-by-step electron movement essential for mastering organic chemistry concepts.
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