Haloalkanes and Haloarenes – Notes

Classification and Nomenclature

Alkyl halides are formed when a hydrogen atom in a hydrocarbon is substituted by a halogen atom.

Alkyl halides have the general formula, R-X.

Haloarenes are formed when a hydrogen atom in a benzene group is replaced by a halogen atom.

Alkyl halides can be classified by the number of halogen atoms in the molecule.

Halogen substitutions may be vinylic, allylic or benzylic.

Alkyl halides and benzylic halides can be classified as primary, secondary, or tertiary.

Haloalkanes can be named as substituted alkanes in IUPAC nomenclature.

Haloarenes can be named as substituted arenes in IUPAC nomenclature.