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What is the major product expected from the following reaction? Na (metal) NH3 (liquid) (A) 6 (B) (D)

What is the major product expected from the following reaction? Na (metal) NH3 (liquid) (A) 6 (B) (D)

Chemistry
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 7:** What is the major product expected from the following reaction? **Reaction:** A terminal alkyne reacts with sodium metal (Na) in liquid ammonia (NH₃). **Answer Choices:** - **(A)**: A trans-alkene with two methyl groups and an ethyl group. - **(B)**: A cis-alkene with two methyl groups and an ethyl group. - **(C)**: An alkene with two ethyl groups. - **(D)**: An alkene with one methyl and one propyl group. **Explanation:** This reaction involves the reduction of an alkyne to form a trans-alkene using sodium in liquid ammonia. This method typically results in a trans configuration due to its mechanism involving the formation of a radical anion intermediate. This process is known as the Birch reduction. The major product will be structured to favor the more stable trans alkene configuration over the cis.
Transcribed Image Text:**Question 7:** What is the major product expected from the following reaction? **Reaction:** A terminal alkyne reacts with sodium metal (Na) in liquid ammonia (NH₃). **Answer Choices:** - **(A)**: A trans-alkene with two methyl groups and an ethyl group. - **(B)**: A cis-alkene with two methyl groups and an ethyl group. - **(C)**: An alkene with two ethyl groups. - **(D)**: An alkene with one methyl and one propyl group. **Explanation:** This reaction involves the reduction of an alkyne to form a trans-alkene using sodium in liquid ammonia. This method typically results in a trans configuration due to its mechanism involving the formation of a radical anion intermediate. This process is known as the Birch reduction. The major product will be structured to favor the more stable trans alkene configuration over the cis.
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