Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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![### Reaction Mechanism Exercise
**Objective:**
Draw the major product(s) for the following reaction.
**Given Reaction:**
\[ \text{CH}_2\text{I}_2, \text{Zn-Cu} \longrightarrow \text{Et}_2\text{O} \]
**Reactant:**
The reactant structure shown is an alkene with a specific carbon chain configuration:
\[ \text{CH}_3-\text{CH}_2-\text{CH}_2-CH=CH_2 \]
**Reagents:**
- Diiodomethane (\(\text{CH}_2\text{I}_2\))
- Zinc-Copper couple (\(\text{Zn-Cu}\))
- Diethyl ether (\(\text{Et}_2\text{O}\)) as the solvent
**Expected Reaction:**
This reaction setup indicates a Simmons-Smith cyclopropanation, where the alkene reacts with \(\text{CH}_2\text{I}_2\) in the presence of a Zn-Cu couple to form a cyclopropane ring.
**Product Formation:**
The double bond in the reactant forms a cyclopropane ring upon reaction with the given reagents, resulting in the following major product:
**Product Structure:**
The carbon chain will have the following configuration:
\[ \left( \text{CH}_3-\text{CH}_2-\text{CH}_2\right) - \left( \text{cyclic} \ CH_2-CH_2\right) \]
1. The double bond is replaced by a cyclopropane ring.
2. The original carbon atoms of the double bond are now bonded to a -\(\text{CH}_2\) group forming a cyclopropane.
Through the Simmons-Smith reaction, the major product formed is the cyclopropyl derivative of the initial alkene.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F2b33b01c-85ce-4633-885b-c121b306567e%2F05758d0c-8b66-4e39-937a-d55fd6227711%2F5kmpzl_processed.jpeg&w=3840&q=75)
Transcribed Image Text:### Reaction Mechanism Exercise
**Objective:**
Draw the major product(s) for the following reaction.
**Given Reaction:**
\[ \text{CH}_2\text{I}_2, \text{Zn-Cu} \longrightarrow \text{Et}_2\text{O} \]
**Reactant:**
The reactant structure shown is an alkene with a specific carbon chain configuration:
\[ \text{CH}_3-\text{CH}_2-\text{CH}_2-CH=CH_2 \]
**Reagents:**
- Diiodomethane (\(\text{CH}_2\text{I}_2\))
- Zinc-Copper couple (\(\text{Zn-Cu}\))
- Diethyl ether (\(\text{Et}_2\text{O}\)) as the solvent
**Expected Reaction:**
This reaction setup indicates a Simmons-Smith cyclopropanation, where the alkene reacts with \(\text{CH}_2\text{I}_2\) in the presence of a Zn-Cu couple to form a cyclopropane ring.
**Product Formation:**
The double bond in the reactant forms a cyclopropane ring upon reaction with the given reagents, resulting in the following major product:
**Product Structure:**
The carbon chain will have the following configuration:
\[ \left( \text{CH}_3-\text{CH}_2-\text{CH}_2\right) - \left( \text{cyclic} \ CH_2-CH_2\right) \]
1. The double bond is replaced by a cyclopropane ring.
2. The original carbon atoms of the double bond are now bonded to a -\(\text{CH}_2\) group forming a cyclopropane.
Through the Simmons-Smith reaction, the major product formed is the cyclopropyl derivative of the initial alkene.
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