Fun. group formula -OH
Name of gun. group phenolic hydroxyl group
Definition :
The aromatic hydroxyl compounds containing one or more -OH group directly attached to carbon atom of benzene ring called phenols.
Phenol or carbolic acid
The aromatic hydroxy compound having one hydroxyl group directly attached to carbon atom of benzene ring called phenol or carbolic acid.
Nomenclature :
1. Common name system of phenol :
I) The phenol is called phenol or carbolic acid by this system.
II) Select the prefixes ortho (o), para (p) & meta (m) for its derivatives.
2. IUPAC system :
I) The IUPAC name of carbolic acid is hydroxy benzene phenols or benzenol.
II) Give the position of substituents by numbers.
| SL. No | Formula | Common name | IUPAC name | ||
| 1 |  |
Phenol OR Carbolic acid |
phenolbenzenol OR hydroxybenzene |
||
| 2 |  |
o-chlorophenol | 2-chlorophenol | ||
| 3 |  |
p-cholorophenol | 4-chlorophenol |