Chapter 12, Problem 33P

Write structural formulas and give the IUPAC names for all the isomers of ${\text{C}}_{\text{6}}{\text{H}}_{\text{5}}\text{C}{\text{4}}_{}{\text{H}}_{\text{9}}$ that contain a monosubstituted benzene ring.

Interpretation Introduction

Interpretation:

The structural formulas and IUPAC names for all the isomers of $C_6{H}_5{C}_4{H}_9$ that contain a monosubstituted benzene ring are to be written.

Concept introduction:

A benzene ring is a cyclic six membered ring containing single and double bonds alternately between carbon atoms. One hydrogen atom is attached to each carbon atom.

In a mono substituted benzene ring, one hydrogen atom is replaced by a substituent.

The substituent should be such that each carbon atom must have formed four bonds and other atoms, if any, should have complete octets.

Answer to Problem 33P

Solution:

Explanation of Solution

The structure of a benzene ring is as follows:

One hydrogen atom is replaced by the group $-C_4{H}_9$.

There are four possible ways in which this group can be attached to the ring.

The structures and IUPAC names of the isomers are shown below:

Conclusion

In a mono substituted benzene ring, one hydrogen atom is substituted by a substituent. An alkyl substituent can be arranged such that each carbon atom must have formed four bonds and other atoms if any should have complete octets.