Major product of the given reaction has to be identified. Concept introduction: H B r addition to alkene under radical condition: Non-markonikov addition of H B r to alkenes occur by a radical mechanism in presence of peroxide, in which a B r · reacts with the π bond of the alkene to create a radical intermediate that H · from H − B r to continue the chain process. The regioselectivity of the products is the opposite of the odinary Markonikov addition products that form under polar conditions; hence it is useful alternative to polar addition of H − B r in organic synthesis.

Question

1. How many neighbors does the proton that produces the multiplet below have? 2. 3. اللـ Draw a partial structure from the multiplet below. (The integration of the multiplet is 6) M Using the additivity constants found in appendix G of your lab manual, calculate the approximate chemical shifts of the protons indicated below. (Show your work!!!) B A Br SH

Answer 1

Question

Chapter 8.8, Problem 8.7P

Interpretation Introduction

Interpretation:

Major product of the given reaction has to be identified.

Concept introduction:

HBr addition to alkene under radical condition:

Non-markonikov addition of HBr to alkenes occur by a radical mechanism in presence of peroxide, in which a Br· reacts with the π bond of the alkene to create a radical intermediate that H· from H−Br to continue the chain process. The regioselectivity of the products is the opposite of the odinary Markonikov addition products that form under polar conditions; hence it is useful alternative to polar addition of H−Br in organic synthesis.

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