Aldehydes, Ketones and Carboxylic Acids – Notes
Aldehydes and Ketones: Nomenclature
The common names of aldehydes are derived from the names of the corresponding carboxylic acids by replacing ‘-ic acid’ by ‘-aldehyde’.
In the IUPAC system, aldehydes are named by replacing the ‘-e’ of the corresponding alkane with ‘al’.
In case of branched chain aldehydes, the longest chain carrying the aldehyde group is considered the parent structure and is numbered starting from the carbon of the aldehyde gropu.
When the aldehyde is attached to a ring system, the suffix carbaldehyde is added after the full name of the ring.
In the common system, ketones are named simply by adding the suffix ‘ketone’ to the name of two alkyl groups.