The effect of alkene structure on the rate of the overall reaction is to be predicted. Concept Introduction: > The transition state for proton transfer from HCl to an alkene resembles a carbocation. > This means that the more stable carbocation must be formed preferentially. > Alkenes , which have non-identical substituents attached to the double bonded carbon atoms, can form more than one type of carbocations upon protonation. > The more stable carbocation is the one having the more substituents attached to the carbon atom bearing the positive charge. > In general, tertiary carbocations are more stable as compared to secondary and primary carbocations. > Once the carbocation is formed, the halide ion gets attached to the carbon bearing the positive charge, forming the alkyl halide as the product.

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Chapter 7, Problem 63DSP

Interpretation Introduction

Interpretation:

The effect of alkene structure on the rate of the overall reaction is to be predicted.

Concept Introduction:
>
The transition state for proton transfer from HCl to an alkene resembles a carbocation.
>
This means that the more stable carbocation must be formed preferentially.
>
Alkenes, which have non-identical substituents attached to the double bonded carbon atoms, can form more than one type of carbocations upon protonation.
>
The more stable carbocation is the one having the more substituents attached to the carbon atom bearing the positive charge.
>
In general, tertiary carbocations are more stable as compared to secondary and primary carbocations.
>
Once the carbocation is formed, the halide ion gets attached to the carbon bearing the positive charge, forming the alkyl halide as the product.

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