Aryl halides : The group of organic compounds in which the halogen atom is directly attached to the benzene ring.
Aralkyl halides : The group of organic compounds in which halogen atom is linked to the carbon atom of the side chain.
Note: If benzene ring is taken as substituent then,
1. By direct chlorination :
Chlorobenzene can be obtained by the direct chlorination of benzene in cold, dark and in the presence of halogen carrier Lewis acids such as AlCl
3
, FeCl
3
,etc.
2. From benzene diazonium chloride :