To name aromatics that contain only one aromatic ring plus the alkyl group, we must number the ring starting with the simplest radical.
Then put in alphabetical order. The prefixes di, tri, tetra do not enter alphabetical order.
For two branches we use the radicals ortho (O), goal (m) and for (P).
The ortho (o) position is 1-2.
The goal position (m) is 1-3.
The position for (p) is 1-4.
Some condensed aromatics:
The groups derived from aromatic hydrocarbons that have lost an H are called a group. aril or arila. Can be represented by -Ar
Phenyl, Benzyl, o-Toluil, m-Toluil, p-Toluil