**Select the expected major product(s) from the treatment of 1-pentyne with 1 equivalent of HBr in the presence of peroxides.**Options:- **A:** 2-bromo-1-pentene- **B:** (E)-1-bromo-1-pentene- **C:** (Z)-1-bromo-1-pentene- **D:** A and B- **E:** B and CThe selected answer is **B:** (E)-1-bromo-1-pentene. In an educational context, the treatment of alkynes with HBr in the presence of peroxides leads to anti-Markovnikov addition, favoring the formation of alkenes with bromine at the less substituted carbon. The presence of peroxides causes this reaction to proceed via a radical mechanism.

Organic reactions are those in which organic reactant react to form organic products. In the given reaction, it has been asked to complete the reaction.Correct option is 2-bromo-1-pentene Explanation:

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Select the expected major product(s) from the treatment of 1-pentyne with 1 equivalent of HBr in the presence of peroxides. A 2-bromo-1-pentene B (E)-1-bromo-1-pentene D (Z)-1-bromo-1-pentene A and B E B and C

Select the expected major product(s) from the treatment of 1-pentyne with 1 equivalent of HBr in the presence of peroxides. A 2-bromo-1-pentene B (E)-1-bromo-1-pentene D (Z)-1-bromo-1-pentene A and B E B and C

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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Concept explainers

Amines

Amines are organic compounds with a nitrogen atom having a lone pair of electrons on it. They are derived from ammonia (NH3) wherein hydrogen atoms are substituted by an aryl or alkyl group.

Question

**Select the expected major product(s) from the treatment of 1-pentyne with 1 equivalent of HBr in the presence of peroxides.**

Options:
- **A:** 2-bromo-1-pentene
- **B:** (E)-1-bromo-1-pentene
- **C:** (Z)-1-bromo-1-pentene
- **D:** A and B
- **E:** B and C

The selected answer is **B:** (E)-1-bromo-1-pentene.

In an educational context, the treatment of alkynes with HBr in the presence of peroxides leads to anti-Markovnikov addition, favoring the formation of alkenes with bromine at the less substituted carbon. The presence of peroxides causes this reaction to proceed via a radical mechanism.

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