Monosubstituted benzenes are named by ending the name of the substituent in benzene.
[1] Bromobenzene
[2] Nitrobenzene
[3] Methylbenzene (toluene)
[4] Ethylbenzene
Some monosubstituted derivatives of benzene have widely accepted common names.
[5] Benzaldehyde
[6] Benzoic acid
[7] Styrene
[8] Acetophenone
[9] Phenol
[10] Methoxybenzene
[11] Aniline
[12] Benzophenone
[13] Toluene
In disubstituted benzenes, the prefixes ortho (1,2-disubstituted benzene), meta (1,3-disubstituted benzene) and para (1,4-disubstituted benzene) are used to indicate the position of the substituents on the ring.
[14] o-Dichlorobenzene (1,2-Dichlorobenzene)
[15] m-Bromochlorobenzene (1-Bromo-3-chlorobenzene)
[16] p-Methylnitrobenzene (p-Nitrotoluene)