What is the expected major product for the following reaction sequence? CH3 Br/H,0 Br OH OH Br CH3 CH3 CH3 CH3 Br OH Br A B. C O B O C O A OD

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
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### Understanding the Expected Major Product in a Chemical Reaction

#### Reaction Overview
The chemical reaction under discussion involves a cyclopentane derivative that undergoes a reaction with bromine (Br₂) in the presence of water (H₂O). The reactant and the mechanism are essential in determining the major product of this reaction.

#### Reactant
The given reactant for the reaction sequence is:
- A cyclopentane ring with a methyl group (CH₃) attached.

The reaction sequence is as follows:
1. Reaction with Br₂/H₂O.

#### Reaction Mechanism
The commonly expected mechanism for this reaction is the halohydrin formation. In organic chemistry, the bromine adds to the double bond, and water subsequently acts as a nucleophile to open the three-membered bromonium ion ring.
  
#### Products
Four possible major products are given as options (A, B, C, and D):

- **Product A**: 
  - Pictured as a cyclopentane ring with a methyl group (CH₃), a bromine atom, and a hydroxyl group (OH) attached.
  - The bromine is attached to one carbon, and the hydroxyl group is attached to an adjacent carbon.

- **Product B**: 
  - Pictured as a cyclopentane ring with a methyl group (CH₃), and both a bromine atom and a hydroxyl group (OH) on adjacent carbons.
  - The configurations of the substituents suggest a different stereochemistry compared to A.

- **Product C**:
  - Pictured as a cyclopentane ring with a methyl group (CH₃) and one hydroxyl group (OH) without the presence of a bromine atom.

- **Product D**:
  - Pictured as a cyclopentane ring with a methyl group (CH₃) and two bromine atoms attached to adjacent carbons.

#### Question
The question asks: "What is the expected major product for the following reaction sequence?"

    - Options:
        - ⃝ B
        - ⃝ C
        - ⃝ A
        - ⃝ D

#### Analysis
Examining the detailed structure of each product:
1. Halohydrin formation introduces the bromine (via Br₂) and hydroxyl group (via H₂O) on adjacent carbons.
2. Product B shows the typical
Transcribed Image Text:### Understanding the Expected Major Product in a Chemical Reaction #### Reaction Overview The chemical reaction under discussion involves a cyclopentane derivative that undergoes a reaction with bromine (Br₂) in the presence of water (H₂O). The reactant and the mechanism are essential in determining the major product of this reaction. #### Reactant The given reactant for the reaction sequence is: - A cyclopentane ring with a methyl group (CH₃) attached. The reaction sequence is as follows: 1. Reaction with Br₂/H₂O. #### Reaction Mechanism The commonly expected mechanism for this reaction is the halohydrin formation. In organic chemistry, the bromine adds to the double bond, and water subsequently acts as a nucleophile to open the three-membered bromonium ion ring. #### Products Four possible major products are given as options (A, B, C, and D): - **Product A**: - Pictured as a cyclopentane ring with a methyl group (CH₃), a bromine atom, and a hydroxyl group (OH) attached. - The bromine is attached to one carbon, and the hydroxyl group is attached to an adjacent carbon. - **Product B**: - Pictured as a cyclopentane ring with a methyl group (CH₃), and both a bromine atom and a hydroxyl group (OH) on adjacent carbons. - The configurations of the substituents suggest a different stereochemistry compared to A. - **Product C**: - Pictured as a cyclopentane ring with a methyl group (CH₃) and one hydroxyl group (OH) without the presence of a bromine atom. - **Product D**: - Pictured as a cyclopentane ring with a methyl group (CH₃) and two bromine atoms attached to adjacent carbons. #### Question The question asks: "What is the expected major product for the following reaction sequence?" - Options: - ⃝ B - ⃝ C - ⃝ A - ⃝ D #### Analysis Examining the detailed structure of each product: 1. Halohydrin formation introduces the bromine (via Br₂) and hydroxyl group (via H₂O) on adjacent carbons. 2. Product B shows the typical
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