b) d) Br Diels-Alder Diels-Alder Diels-Alder H₂O NaCN

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Solve letter a), b), d) or e)

**Title: Understanding Major Organic Products in Chemical Reactions**

---

**Instructions:**

Complete the following exercises to determine the major organic product for each reaction. 

**1. Reaction Types:**
   - *Diels-Alder Reactions*
   - *Substitution and Elimination Reactions*

**Exercises:**

**a) Diels-Alder Reaction**

- **Reactants:**
  - Aromatic compound (Benzene)
  - Alkyne with a carbonyl group (Acetylenic ketone)

- **Reaction:**
  - Diels-Alder cycloaddition forming a cyclic six-membered ring.

**b) Diels-Alder Reaction**

- **Reactants:**
  - Cyclopentadiene
  - Compound with a dienophile (an α,β-unsaturated ester)

- **Reaction:**
  - Expected to produce a bicyclic compound derived from the cycloaddition.

**c) Diels-Alder Reaction**

- **Reactants:**
  - Conjugated diene
  - Maleic anhydride

- **Reaction:**
  - Forms a cyclic adduct with one new C–C bond, resulting in a six-membered ring.

**d) Substitution Reaction**

- **Reactants:**
  - Benzyl bromide
  - Water (H₂O)

- **Reaction:**
  - Undergoes nucleophilic substitution (Sₙ1 or Sₙ2).

**e) Substitution Reaction**

- **Reactants:**
  - Chlorinated alkane
  - Sodium cyanide (NaCN)

- **Reaction:**
  - Produces a nitrile via Sₙ2 mechanism.

---

These exercises help illustrate the application of organic chemistry principles, such as reaction mechanisms and predicting products. Analyze the structure of reactants and consider electronic effects, reaction conditions, and stereochemistry to deduce the correct major product.
Transcribed Image Text:**Title: Understanding Major Organic Products in Chemical Reactions** --- **Instructions:** Complete the following exercises to determine the major organic product for each reaction. **1. Reaction Types:** - *Diels-Alder Reactions* - *Substitution and Elimination Reactions* **Exercises:** **a) Diels-Alder Reaction** - **Reactants:** - Aromatic compound (Benzene) - Alkyne with a carbonyl group (Acetylenic ketone) - **Reaction:** - Diels-Alder cycloaddition forming a cyclic six-membered ring. **b) Diels-Alder Reaction** - **Reactants:** - Cyclopentadiene - Compound with a dienophile (an α,β-unsaturated ester) - **Reaction:** - Expected to produce a bicyclic compound derived from the cycloaddition. **c) Diels-Alder Reaction** - **Reactants:** - Conjugated diene - Maleic anhydride - **Reaction:** - Forms a cyclic adduct with one new C–C bond, resulting in a six-membered ring. **d) Substitution Reaction** - **Reactants:** - Benzyl bromide - Water (H₂O) - **Reaction:** - Undergoes nucleophilic substitution (Sₙ1 or Sₙ2). **e) Substitution Reaction** - **Reactants:** - Chlorinated alkane - Sodium cyanide (NaCN) - **Reaction:** - Produces a nitrile via Sₙ2 mechanism. --- These exercises help illustrate the application of organic chemistry principles, such as reaction mechanisms and predicting products. Analyze the structure of reactants and consider electronic effects, reaction conditions, and stereochemistry to deduce the correct major product.
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