Pick out the process which does not involve carbocation formation: OH OH Br₂ CC14 HBr ether H₂SO4 H₂O HCI ether Br Br None of these involve a carbocation
Pick out the process which does not involve carbocation formation: OH OH Br₂ CC14 HBr ether H₂SO4 H₂O HCI ether Br Br None of these involve a carbocation
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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Question
![**Question:**
Pick out the process which does not involve carbocation formation:
1. **Reaction A:**
\[
\text{Alkene (CH}_2\text{=CH}_2) \xrightarrow{\text{Br}_2/CCl_4} \text{Dibromoalkane (Br-CH}_2\text{-CH}_2\text{-Br)}
\]
2. **Reaction B:**
\[
\text{Tertiary alcohol} \xrightarrow{\text{HBr/ether}} \text{Tertiary bromoalkane}
\]
**Selected**
3. **Reaction C:**
\[
\text{Tertiary alcohol} \xrightarrow{\text{H}_2\text{SO}_4/\text{H}_2\text{O}} \text{Alkene (CH}_3\text{-CH=CH}_2)
\]
4. **Reaction D:**
\[
\text{Alkene (CH}_2\text{=CH}_2) \xrightarrow{\text{HCl/ether}} \text{Chloroalkane (CH}_3\text{-CH}_2\text{-Cl)}
\]
5. **Option E:**
- None of these involve a carbocation.
**Analysis:**
- **Reaction A and D** are examples of electrophilic addition to alkenes and typically do not involve the formation of carbocations.
- **Reaction B**, highlighted as the correct choice, involves an SN1 mechanism in which a carbocation is formed.
- **Reaction C** involves an E1 mechanism, also forming a carbocation.
**Conclusion:**
The highlighted choice indicates Reaction B does not involve carbocation formation, which appears incorrect unless additional context is provided.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F2a35b697-38d2-4033-9241-845115dff029%2Fafee33d2-14c2-4628-aa2b-e571d4e15c17%2Fhe4nl2y_processed.jpeg&w=3840&q=75)
Transcribed Image Text:**Question:**
Pick out the process which does not involve carbocation formation:
1. **Reaction A:**
\[
\text{Alkene (CH}_2\text{=CH}_2) \xrightarrow{\text{Br}_2/CCl_4} \text{Dibromoalkane (Br-CH}_2\text{-CH}_2\text{-Br)}
\]
2. **Reaction B:**
\[
\text{Tertiary alcohol} \xrightarrow{\text{HBr/ether}} \text{Tertiary bromoalkane}
\]
**Selected**
3. **Reaction C:**
\[
\text{Tertiary alcohol} \xrightarrow{\text{H}_2\text{SO}_4/\text{H}_2\text{O}} \text{Alkene (CH}_3\text{-CH=CH}_2)
\]
4. **Reaction D:**
\[
\text{Alkene (CH}_2\text{=CH}_2) \xrightarrow{\text{HCl/ether}} \text{Chloroalkane (CH}_3\text{-CH}_2\text{-Cl)}
\]
5. **Option E:**
- None of these involve a carbocation.
**Analysis:**
- **Reaction A and D** are examples of electrophilic addition to alkenes and typically do not involve the formation of carbocations.
- **Reaction B**, highlighted as the correct choice, involves an SN1 mechanism in which a carbocation is formed.
- **Reaction C** involves an E1 mechanism, also forming a carbocation.
**Conclusion:**
The highlighted choice indicates Reaction B does not involve carbocation formation, which appears incorrect unless additional context is provided.
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