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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![Title: Reaction Product Identification
**Chemical Reaction:**
- Reactants:
- Carbonyl compound with the structure:
- A five-carbon chain with a ketone group (C=O) on the second carbon.
- Reagents:
- \( \text{Br}_2 \),
- \( \text{H}_3\text{O}^+ \).
**Question:**
What is the major product of this reaction?
**Product Options:**
- **A.** 3-Bromopentan-2-one
- Structure: A five-carbon chain with a ketone on the second carbon and a bromine atom on the third carbon.
- **B.** Bromo-pentan-2-one
- Structure: Similar to option A but with the bromine atom attached to the fourth carbon.
- **C.** Tribromo compound
- Structure: A five-carbon chain with a ketone on the second carbon. The third, fourth, and fifth carbons each have a bromine atom attached.
- **D.** 2,4-Dibromopentan-2-one
- Structure: A five-carbon chain with a ketone on the second carbon, bromine atoms on the second and fourth carbons, with the same carbonyl carbon now being positively charged.
**Answer Options:**
- B [ ]
- D [ ]
- C [ ]
- A [ ]
**Explanation:**
The reaction involves the bromination of a carbonyl compound, likely through an enol or enolate intermediate, leading to the formation of an alpha-brominated product. Evaluate the bromination pattern based on the reactivity of the carbonyl compound under acidic conditions.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fcd0d6120-6381-4a0f-835d-aa8dc074e5be%2F59600c69-2935-40cf-9b51-a3ec4f645f08%2F886rmmn_processed.png&w=3840&q=75)
Transcribed Image Text:Title: Reaction Product Identification
**Chemical Reaction:**
- Reactants:
- Carbonyl compound with the structure:
- A five-carbon chain with a ketone group (C=O) on the second carbon.
- Reagents:
- \( \text{Br}_2 \),
- \( \text{H}_3\text{O}^+ \).
**Question:**
What is the major product of this reaction?
**Product Options:**
- **A.** 3-Bromopentan-2-one
- Structure: A five-carbon chain with a ketone on the second carbon and a bromine atom on the third carbon.
- **B.** Bromo-pentan-2-one
- Structure: Similar to option A but with the bromine atom attached to the fourth carbon.
- **C.** Tribromo compound
- Structure: A five-carbon chain with a ketone on the second carbon. The third, fourth, and fifth carbons each have a bromine atom attached.
- **D.** 2,4-Dibromopentan-2-one
- Structure: A five-carbon chain with a ketone on the second carbon, bromine atoms on the second and fourth carbons, with the same carbonyl carbon now being positively charged.
**Answer Options:**
- B [ ]
- D [ ]
- C [ ]
- A [ ]
**Explanation:**
The reaction involves the bromination of a carbonyl compound, likely through an enol or enolate intermediate, leading to the formation of an alpha-brominated product. Evaluate the bromination pattern based on the reactivity of the carbonyl compound under acidic conditions.
Expert Solution
Step 1: Alpha halogenation of ketone
Halogenation of ketone is carried in acidic condition and it takes place at the alpha position. The halogens used for these reactions are Cl2, Br2 and I2.
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