Chapter 16.10, Problem 23P

Interpretation Introduction

a)

Interpretation:

What is wrong with the scheme given above is to be stated.

Concept introduction:

Friedal-Crafts reaction is not possible with aromatic rings that are substituted either by a strongly with-drawing group such as carbonyl, nitrile or an amino group that can be protonated.

To state:

What is wrong with the scheme given above.

Interpretation Introduction

b)

Interpretation:

What is wrong in the scheme given above is to be stated.

Concept introduction:

Chlorine is an ortho & para director in aromatic electrophilic substitution reactions. It also deactivates the ring towards electrophiles to some extent. Alkyl groups are also ortho & para directors but they activate the ring towards electrophiles.

To show:

What is wrong with the scheme given.