1. Draw the complete, detailed mechanism (curved arrows) for the addition of HCI to dihydropyran. Explain why the product shown is the major product of this reaction by commenting on the carbocation stability in 1-3 complete sentences.

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**Question 1:**
Draw the complete, detailed mechanism (curved arrows) for the addition of HCl to dihydropyran. **Explain** why the product shown is the major product of this reaction by commenting on the carbocation stability in 1–3 complete sentences.

**Diagram Explanation:**

The diagram displays a chemical reaction starting with a molecule of dihydropyran, which is represented by a hexagonal ring with an oxygen atom incorporated and a double bond on one side. This reactant is shown reacting with HCl to form two products.

**Products:**
1. The first product features the original dihydropyran structure with a chloride (Cl) atom added at the location previously housing the double bond, shown with a solid wedge indicating stereochemistry.
2. The second product is similar, but the chloride (Cl) atom is shown with a dashed wedge, indicating the alternative stereochemistry.

The reaction involves the addition of HCl across the double bond, with the major product resulting from the more stable carbocation intermediate during the reaction. This intermediate stability is crucial for determining the major product.
Transcribed Image Text:**Question 1:** Draw the complete, detailed mechanism (curved arrows) for the addition of HCl to dihydropyran. **Explain** why the product shown is the major product of this reaction by commenting on the carbocation stability in 1–3 complete sentences. **Diagram Explanation:** The diagram displays a chemical reaction starting with a molecule of dihydropyran, which is represented by a hexagonal ring with an oxygen atom incorporated and a double bond on one side. This reactant is shown reacting with HCl to form two products. **Products:** 1. The first product features the original dihydropyran structure with a chloride (Cl) atom added at the location previously housing the double bond, shown with a solid wedge indicating stereochemistry. 2. The second product is similar, but the chloride (Cl) atom is shown with a dashed wedge, indicating the alternative stereochemistry. The reaction involves the addition of HCl across the double bond, with the major product resulting from the more stable carbocation intermediate during the reaction. This intermediate stability is crucial for determining the major product.
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