Chemistry
Chemistry
10th Edition
ISBN: 9781305957404
Author: Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher: Cengage Learning
Bartleby Related Questions Icon

Related questions

bartleby

Concept explainers

Question
### Question: 
Which is the best method for the following transformation?

### Diagram:
The diagram depicts a chemical reaction where an alkene is converted to an alcohol. The structure on the left is an alkene with a double bond between two carbon atoms (one of which is a methane group), and the structure on the right is an alcohol where the OH group is attached to what was the formerly double-bonded carbon.
```
       H3C-CH=CH2   →   H3C-CH(OH)-CH3
```

### Options:
A. 
1. BH₃, THF  
2. H₂O₂, OH⁻

B. 
H⁺, H₂O

C. 
Concentrated H₂SO₄

D. 
1. Hg(OAc)₂, H₂O  
2. NaBH₄

## Explanation:

### Option A:
The combination of BH₃ (borane) in THF (tetrahydrofuran) followed by H₂O₂ (hydrogen peroxide) and OH⁻ (hydroxide ion) is usually indicative of hydroboration-oxidation. This method results in the anti-Markovnikov addition of water (OH and H), where the hydroxyl group attaches to the less substituted carbon atom.

### Option B:
Using H⁺ (proton, typically in the form of an acid) and H₂O (water) usually leads to the Markovnikov addition of water to the double bond, where the hydroxyl group attaches to the more substituted carbon atom.

### Option C:
Concentrated H₂SO₄ (sulfuric acid) can be used for acid-catalyzed hydration of alkenes, which typically follows Markovnikov's rule.

### Option D:
The use of Hg(OAc)₂, H₂O followed by NaBH₄ (sodium borohydride) describes an oxymercuration-demercuration reaction. This method also results in Markovnikov addition of water without rearrangements.

---

### Conclusion:
For converting an alkene to an alcohol with the anti-Markovnikov orientation, the best method is **Option A** (1. BH₃, THF 2. H₂O₂, OH⁻).
expand button
Transcribed Image Text:### Question: Which is the best method for the following transformation? ### Diagram: The diagram depicts a chemical reaction where an alkene is converted to an alcohol. The structure on the left is an alkene with a double bond between two carbon atoms (one of which is a methane group), and the structure on the right is an alcohol where the OH group is attached to what was the formerly double-bonded carbon. ``` H3C-CH=CH2 → H3C-CH(OH)-CH3 ``` ### Options: A. 1. BH₃, THF 2. H₂O₂, OH⁻ B. H⁺, H₂O C. Concentrated H₂SO₄ D. 1. Hg(OAc)₂, H₂O 2. NaBH₄ ## Explanation: ### Option A: The combination of BH₃ (borane) in THF (tetrahydrofuran) followed by H₂O₂ (hydrogen peroxide) and OH⁻ (hydroxide ion) is usually indicative of hydroboration-oxidation. This method results in the anti-Markovnikov addition of water (OH and H), where the hydroxyl group attaches to the less substituted carbon atom. ### Option B: Using H⁺ (proton, typically in the form of an acid) and H₂O (water) usually leads to the Markovnikov addition of water to the double bond, where the hydroxyl group attaches to the more substituted carbon atom. ### Option C: Concentrated H₂SO₄ (sulfuric acid) can be used for acid-catalyzed hydration of alkenes, which typically follows Markovnikov's rule. ### Option D: The use of Hg(OAc)₂, H₂O followed by NaBH₄ (sodium borohydride) describes an oxymercuration-demercuration reaction. This method also results in Markovnikov addition of water without rearrangements. --- ### Conclusion: For converting an alkene to an alcohol with the anti-Markovnikov orientation, the best method is **Option A** (1. BH₃, THF 2. H₂O₂, OH⁻).
Expert Solution
Check Mark
Knowledge Booster
Background pattern image
Chemistry
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, chemistry and related others by exploring similar questions and additional content below.
Similar questions
SEE MORE QUESTIONS
Recommended textbooks for you
Text book image
Chemistry
Chemistry
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Cengage Learning
Text book image
Chemistry
Chemistry
ISBN:9781259911156
Author:Raymond Chang Dr., Jason Overby Professor
Publisher:McGraw-Hill Education
Text book image
Principles of Instrumental Analysis
Chemistry
ISBN:9781305577213
Author:Douglas A. Skoog, F. James Holler, Stanley R. Crouch
Publisher:Cengage Learning
Text book image
Organic Chemistry
Chemistry
ISBN:9780078021558
Author:Janice Gorzynski Smith Dr.
Publisher:McGraw-Hill Education
Text book image
Chemistry: Principles and Reactions
Chemistry
ISBN:9781305079373
Author:William L. Masterton, Cecile N. Hurley
Publisher:Cengage Learning
Text book image
Elementary Principles of Chemical Processes, Bind...
Chemistry
ISBN:9781118431221
Author:Richard M. Felder, Ronald W. Rousseau, Lisa G. Bullard
Publisher:WILEY