2. The following elimination will not give the desired alkene product. Identify the mistake(s) in the proposed reaction and correct it by writing a new reaction. KO'Bu, DMSQ + КОН

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**Problem 2: Elimination Reaction Analysis**

The diagram showcases an elimination reaction where 2-butanol is treated with potassium tert-butoxide (KOtBu) in dimethyl sulfoxide (DMSO). The reaction aims to produce an alkene.

### Components:
- **Reactant:** 2-Butanol (with a hydroxyl group on the secondary carbon)
- **Reagents:** KOtBu (potassium tert-butoxide) and DMSO (dimethyl sulfoxide)
- **Expected Product:** An alkene with a double bond at a specific location, accompanied by potassium hydroxide (KOH) as a byproduct.

### Issue to Address:
The reaction depicted will not result in the desired alkene product.

### Task:
- Identify the mistake(s) within the proposed reaction mechanism.
- Write a corrected reaction that leads to the proper formation of an alkene.

**Explanation:**

- **Original Reaction Problem:** The reaction conditions listed (use of KOtBu and DMSO) typically favor dehydrohalogenation or E2 eliminations. However, to form an alkene directly via alcohol starting material, further examination of the conditions and possible intermediates or leaving groups might reveal discrepancies.

- **Correction Method:** Ensure the proper conversion of the alcohol functional group into a suitable leaving group before elimination occurs (e.g., conversion to tosylate). Then proceed with E2 via a strong base like KOtBu. This setup may necessitate alternative subject material or conditions to provide the reactive environment needed for eliminating reactions.
Transcribed Image Text:**Problem 2: Elimination Reaction Analysis** The diagram showcases an elimination reaction where 2-butanol is treated with potassium tert-butoxide (KOtBu) in dimethyl sulfoxide (DMSO). The reaction aims to produce an alkene. ### Components: - **Reactant:** 2-Butanol (with a hydroxyl group on the secondary carbon) - **Reagents:** KOtBu (potassium tert-butoxide) and DMSO (dimethyl sulfoxide) - **Expected Product:** An alkene with a double bond at a specific location, accompanied by potassium hydroxide (KOH) as a byproduct. ### Issue to Address: The reaction depicted will not result in the desired alkene product. ### Task: - Identify the mistake(s) within the proposed reaction mechanism. - Write a corrected reaction that leads to the proper formation of an alkene. **Explanation:** - **Original Reaction Problem:** The reaction conditions listed (use of KOtBu and DMSO) typically favor dehydrohalogenation or E2 eliminations. However, to form an alkene directly via alcohol starting material, further examination of the conditions and possible intermediates or leaving groups might reveal discrepancies. - **Correction Method:** Ensure the proper conversion of the alcohol functional group into a suitable leaving group before elimination occurs (e.g., conversion to tosylate). Then proceed with E2 via a strong base like KOtBu. This setup may necessitate alternative subject material or conditions to provide the reactive environment needed for eliminating reactions.
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