Chapter B, Problem B.13P

Interpretation Introduction

Interpretation:

The structures of $\text{p-dichlorobenzene}$ and $\text{m-bromoethoxybenzene}$ are to be drawn. Their IUPAC names using locator numbers are to be written.

Concept introduction:

Benzene derivatives have one or more substituents attached to the benzene ring. In such compounds, the root name is benzene. The ring is numbered so that the substituents attached to it, get the lowest locator numbers. Prefixes and locator numbers are used for writing the number and type of substituents. In the case of disubstituted benzene, the prefixes ortho, meta, and para are used to indicate the relative positions of the two substituents. In the case of ortho disubstituted benzene, the position of the two substituents is 1, 2. In the case of meta disubstituted benzene, the position of the two substituents is 1, 3. In the case of para disubstituted benzene, the position of the two substituents is 1, 4.