8. H3C. 9. 10. CI C(CH3)3 CH₂-C I CH3O* Nat CH3OH CH3 CH3O* Na* CH3OH H K+ CN DMF C(CH3)3 only alkene isomer + Na* CI+ CH3OH

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The image shows a series of organic chemistry reactions with cyclohexane and benzene derivatives interacting with reagents.

**8. Reaction**
- **Starting Material:** A chlorinated cyclohexane derivative with a tert-butyl group.
- **Reagents:** Sodium methoxide (CH₃O⁻ Na⁺) and methanol (CH₃OH).
- **Product:** The product is not shown, but the reaction typically suggests an elimination reaction leading to an alkene.

**9. Reaction**
- **Starting Material:** A cyclohexane ring.
- **Reagents:** Sodium methoxide (CH₃O⁻ Na⁺) in methanol (CH₃OH).
- **Product and Note:** A cyclohexene derivative with a tert-butyl group labeled as "only alkene isomer" plus sodium chloride (Na⁺ Cl⁻) and methanol (CH₃OH). This indicates a selective formation of a specific alkene isomer.

**10. Reaction**
- **Starting Material:** A benzyl iodide with a methyl group on the adjacent carbon.
- **Reagents:** Potassium cyanide (K⁺ CN⁻) in dimethylformamide (DMF).
- **Product:** The product is not shown, but this is likely a nucleophilic substitution resulting in a nitrile group replacing the iodide.

**11. Reaction**
- **Starting Material:** Not shown.
- **Reagents:** Sodium methoxide (CH₃O⁻ Na⁺) in dimethyl sulfoxide (DMSO).
- **Product:** Formation of a vinyl benzene derivative with an exocyclic methylene group, alongside sodium methanesulfinate (CH₃S⁻O⁻ Na⁺) and methanol (CH₃OH).

Each reaction demonstrates the application of different reagents to transform starting materials into specific products, highlighting the concepts of nucleophilic substitution and elimination in organic chemistry.
Transcribed Image Text:The image shows a series of organic chemistry reactions with cyclohexane and benzene derivatives interacting with reagents. **8. Reaction** - **Starting Material:** A chlorinated cyclohexane derivative with a tert-butyl group. - **Reagents:** Sodium methoxide (CH₃O⁻ Na⁺) and methanol (CH₃OH). - **Product:** The product is not shown, but the reaction typically suggests an elimination reaction leading to an alkene. **9. Reaction** - **Starting Material:** A cyclohexane ring. - **Reagents:** Sodium methoxide (CH₃O⁻ Na⁺) in methanol (CH₃OH). - **Product and Note:** A cyclohexene derivative with a tert-butyl group labeled as "only alkene isomer" plus sodium chloride (Na⁺ Cl⁻) and methanol (CH₃OH). This indicates a selective formation of a specific alkene isomer. **10. Reaction** - **Starting Material:** A benzyl iodide with a methyl group on the adjacent carbon. - **Reagents:** Potassium cyanide (K⁺ CN⁻) in dimethylformamide (DMF). - **Product:** The product is not shown, but this is likely a nucleophilic substitution resulting in a nitrile group replacing the iodide. **11. Reaction** - **Starting Material:** Not shown. - **Reagents:** Sodium methoxide (CH₃O⁻ Na⁺) in dimethyl sulfoxide (DMSO). - **Product:** Formation of a vinyl benzene derivative with an exocyclic methylene group, alongside sodium methanesulfinate (CH₃S⁻O⁻ Na⁺) and methanol (CH₃OH). Each reaction demonstrates the application of different reagents to transform starting materials into specific products, highlighting the concepts of nucleophilic substitution and elimination in organic chemistry.
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