Chapter 8.16, Problem 35P

Interpretation Introduction

Interpretation:

• The major product of the reaction has to be predicted.

Concept Introduction:

Effect of delocalized electrons on the product of the reaction:

The presence of delocalizes electrons while electrophilic addition or substitution the cation intermediate formed is shifted to stable carbocation form at higher rate, and that leads to the product.

Rule: The stabilities of carbocation are,

${\text{Benzyl cation = allyl cation = 3}}^{\circ }{\text{carbocation > 2}}^{\circ }{\text{ carbocation > 1}}^{\circ }\text{ carbocation > methyl cation > vinyl cation}$