4. Predict the major organic product(s) of the following reactions. Be sure to clearly identify stereochemistry as appropriate. a. b. m C. d. 1. BH3, THF 2. H₂O2, NaOH + CH₂12 Br 1. Mg, THF 2. D₂0 Zn-Cu CH₂Cl2 Na DMF

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predict the major organic product(s), and tell me the stereochemistry of each product if theres any

**4. Predict the major organic product(s) of the following reactions. Be sure to clearly identify stereochemistry as appropriate.**

**a.**
- **Reaction:** 
  - Reagents: 1. \( \text{BH}_3, \text{THF} \)  2. \( \text{H}_2\text{O}_2, \text{NaOH} \)
- **Reactant:** Cyclopentene

**b.**
- **Reaction:**
  - Reagents: 1. \( \text{Mg, THF} \)  2. \( \text{D}_2\text{O} \) 
- **Reactant:** (Image shows a structure with a chlorine (Cl) substituent on a chain of five carbon atoms with varying substituents.)

**c.**
- **Reaction:**
  - Reagents: \( \text{CH}_2\text{I}_2 \), \( \text{Zn-Cu} \), \( \text{CH}_2\text{Cl}_2 \)
- **Reactants:** (Image shows an alkene and \( \text{CH}_2\text{I}_2 \))

**d.**
- **Reaction:**
  - Reagents: \( \text{Na}^{+/-} \), \( \text{DMF} \)
- **Reactant:** (Image shows bromobenzene with an ethyl group, and an ethoxide ion)

**Notes on diagrams:**
1. **Diagram (a):** 
   - This reaction involves the hydroboration-oxidation of an alkene.
   
2. **Diagram (b):**
   - This reaction describes the formation of a Grignard reagent and its subsequent reaction with deuterium oxide \( \text{D}_2\text{O} \).

3. **Diagram (c):** 
   - This reaction suggests the Simmons-Smith reaction, forming a cyclopropane ring on the alkene. 

4. **Diagram (d):**
   - This reaction involves a nucleophilic substitution where an ethoxide ion displaces a bromine atom.

Each reaction involves specific chemical transformations and may require an understanding of the mechanism to predict stereochemical outcomes.
Transcribed Image Text:**4. Predict the major organic product(s) of the following reactions. Be sure to clearly identify stereochemistry as appropriate.** **a.** - **Reaction:** - Reagents: 1. \( \text{BH}_3, \text{THF} \) 2. \( \text{H}_2\text{O}_2, \text{NaOH} \) - **Reactant:** Cyclopentene **b.** - **Reaction:** - Reagents: 1. \( \text{Mg, THF} \) 2. \( \text{D}_2\text{O} \) - **Reactant:** (Image shows a structure with a chlorine (Cl) substituent on a chain of five carbon atoms with varying substituents.) **c.** - **Reaction:** - Reagents: \( \text{CH}_2\text{I}_2 \), \( \text{Zn-Cu} \), \( \text{CH}_2\text{Cl}_2 \) - **Reactants:** (Image shows an alkene and \( \text{CH}_2\text{I}_2 \)) **d.** - **Reaction:** - Reagents: \( \text{Na}^{+/-} \), \( \text{DMF} \) - **Reactant:** (Image shows bromobenzene with an ethyl group, and an ethoxide ion) **Notes on diagrams:** 1. **Diagram (a):** - This reaction involves the hydroboration-oxidation of an alkene. 2. **Diagram (b):** - This reaction describes the formation of a Grignard reagent and its subsequent reaction with deuterium oxide \( \text{D}_2\text{O} \). 3. **Diagram (c):** - This reaction suggests the Simmons-Smith reaction, forming a cyclopropane ring on the alkene. 4. **Diagram (d):** - This reaction involves a nucleophilic substitution where an ethoxide ion displaces a bromine atom. Each reaction involves specific chemical transformations and may require an understanding of the mechanism to predict stereochemical outcomes.
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