Chapter 22, Problem 13QAP

Interpretation Introduction

Interpretation:

The name of the given derivative of nitrobenzene should be determined.

Concept introduction:

The ring structures of the compound having uncommon stability due to delocalized pi electron density shared in between all the carbon atoms of the ring is said to be an aromatic compound.

When a benzene ring is substituted with only one substituent (monosubstituted ring), we do not indicate its position on the ring. For example: benzene ring substituted with nitro, will name it as nitrobenzene.

For a benzene ring substituted with more than one substituent the position of the substituents is written first in the name followed by di, tri, tetra etc. (to indicate the number of substituents) followed by the name of the substituents then adding suffix benzene or common name of monoderivative of benzene.

The numbering is done in such a way that the substituents gets the lowest numbers.

The prefixes used in organic chemistry for disubstituted benzene are ortho-, meta-, and para- which are used to indicate the position of substituent (non-hydrogen) on benzene.

• Ortho

It describes the position of substituents at 1 and 2 positions on benzene, an aromatic compound. The symbol used for ortho is o- that means substituents at 1,2-positions.

• Meta

It describes the position of substituents at 1 and 3 positions on benzene, an aromatic compound. The symbol used for ortho is m- that means substituents at 1,3-positions.

• Para

It describes the position of substituents at 1 and 4 positions on benzene, an aromatic compound. The symbol used for ortho is p- that means substituents at 1,4-positions.

Interpretation Introduction

Interpretation:

The name of the given derivative of nitrobenzene should be determined.

Concept introduction:

The ring structures of the compound having uncommon stability due to delocalized pi electron density shared in between all the carbon atoms of the ring is said to be an aromatic compound.

When a benzene ring is substituted with only one substituent (monosubstituted ring), we do not indicate its position on the ring. For example: benzene ring substituted with nitro, will name it as nitrobenzene.

For a benzene ring substituted with more than one substituent the position of the substituents is written first in the name followed by di, tri, tetra etc. (to indicate the number of substituents) followed by the name of the substituents then adding suffix benzene or common name of monoderivative of benzene.

The numbering is done in such a way that the substituents gets the lowest numbers.

The prefixes used in organic chemistry for disubstituted benzene are ortho-, meta-, and para- which are used to indicate the position of substituent (non-hydrogen) on benzene.

• Ortho

It describes the position of substituents at 1 and 2 positions on benzene, an aromatic compound. The symbol used for ortho is o- that means substituents at 1,2-positions.

• Meta

It describes the position of substituents at 1 and 3 positions on benzene, an aromatic compound. The symbol used for ortho is m- that means substituents at 1,3-positions.

• Para

It describes the position of substituents at 1 and 4 positions on benzene, an aromatic compound. The symbol used for ortho is p- that means substituents at 1,4-positions.

Interpretation Introduction

Interpretation:

The name of the given derivative of nitrobenzene should be determined.

Concept introduction:

The ring structures of the compound having uncommon stability due to delocalized pi electron density shared in between all the carbon atoms of the ring is said to be an aromatic compound.

When a benzene ring is substituted with only one substituent (monosubstituted ring), we do not indicate its position on the ring. For example: benzene ring substituted with nitro, will name it as nitrobenzene.

For a benzene ring substituted with more than one substituent the position of the substituents is written first in the name followed by di, tri, tetra etc. (to indicate the number of substituents) followed by the name of the substituents then adding suffix benzene or common name of monoderivative of benzene.

The numbering is done in such a way that the substituents gets the lowest numbers.