Identify the major product. Br 1. excess NaNH2 2. H2О Br NH2 NH2

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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**Question: Identify the major product.**

The reactant is a dibromoalkane: 

1. Reacts with excess NaNH₂ (sodium amide)
2. Followed by treatment with H₂O (water)

**Options:**

- Option A: An alkane structure with no substituents
- Option B: An alkane with two amino groups (-NH₂) attached
- Option C: A structure with a triple bond (alkyne)
- Option D: The correct answer, marked with a filled circle — an alkyne with the triple bond at the carbon chain.

**Explanation:**
The reaction involves a dehydrohalogenation process where sodium amide removes the leaving groups (bromine atoms) resulting in the formation of an alkyne. The generated alkyne upon hydrolysis with water remains stable, highlighting a classic example of elimination reactions leading to the formation of multiple bonds.
Transcribed Image Text:**Question: Identify the major product.** The reactant is a dibromoalkane: 1. Reacts with excess NaNH₂ (sodium amide) 2. Followed by treatment with H₂O (water) **Options:** - Option A: An alkane structure with no substituents - Option B: An alkane with two amino groups (-NH₂) attached - Option C: A structure with a triple bond (alkyne) - Option D: The correct answer, marked with a filled circle — an alkyne with the triple bond at the carbon chain. **Explanation:** The reaction involves a dehydrohalogenation process where sodium amide removes the leaving groups (bromine atoms) resulting in the formation of an alkyne. The generated alkyne upon hydrolysis with water remains stable, highlighting a classic example of elimination reactions leading to the formation of multiple bonds.
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