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Chapter 11: Problem 9

What is Markovnikov's rule?

Short Answer

Expert verified
Markovnikov's rule is a principle in Organic Chemistry that states that in an addition of HX to an unsymmetrical alkene, the hydrogen (H) adds to the carbon with the most hydrogen substituents, while the halide (X) adds to the carbon with the fewest hydrogen substituents.

Step by step solution

01

Introduction to Markovnikov's Rule

Markovnikov's Rule, a principle in organic chemistry, was formulated by Russian chemist Vladimir Markovnikov in 1865. It is an essential guide in understanding the products of the addition of hydrogen halides to alkenes.
02

Understanding the Rule

Markovnikov's rule states that in the addition of a protic acid HX to an unsymmetrical alkene, the acid hydrogen (H) gets attached to the carbon with more hydrogen substituents, and the halide (X) group gets attached to the carbon with fewer hydrogen substituents. In simpler words, in the addition reaction to an unsymmetrical alkene, the 'rich' (carbon atom holding more hydrogen) gets 'richer' (receives more hydrogen).
03

Significance of Markovnikov's Rule

This rule helps predict the molecular structures of certain organic compounds during synthesis. It governs the regioselectivity of electrophilic addition to an alkene. Understanding Markovnikov's rule is critical to the study of organic reactions and mechanisms.

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Most popular questions from this chapter

State which member of each of these pairs of compounds is the more reactive and explain why: (a) propane and cyclopropane, (b) ethylene and methane, (c) acetaldehyde and acetone.

Alkenes exhibit geometric isomerism because rotation about the \(\mathrm{C}=\mathrm{C}\) bond is restricted. Explain.

Amines are Bronsted bases. The unpleasant smell of fish is due to the presence of certain amines. Explain why cooks often add lemon juice to suppress the odor of fish (in addition to enhancing the flavor).

Draw skeletal structures of the boat and chair forms of cyclohexane.

Write the structures of three alkenes that yield 2-methylbutane on hydrogenation.
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