Chapter 7, Problem 32P

a)

Interpretation Introduction

Interpretation:

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

Concept Introduction:

Hydrobromination:

A hydrobromination reaction is one of the electrophilic additions to alkenes to yield the corresponding bromo alkanes. In this reaction the bromine atom adds to the double bond carbon which is having lesser number of hydrogen or more substituted carbon (Markovnikov's rule).

b)

Interpretation Introduction

Interpretation:

The product of the given reaction has to be predicted.

Concept Introduction:

Hydrobromination:

A hydrobromination reaction is one of the electrophilic additions to alkenes to yield the corresponding bromo alkanes. In this reaction the bromine atom adds to the double bond carbon which is having lesser number of hydrogen or more substituted carbon (Markovnikov's rule).

(c)

Interpretation Introduction

Interpretation:

The product of the given reaction has to be predicted.

Concept Introduction:

Diels-Alder reaction:

A conjugated diene reacts with a compound containing a carbon-carbon double bond. It is a cycloaddition reaction, where two reactants form a cyclic product.

The stabilities of carbocation are,

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