Question

Select the correct order of priority for the given functional groups when more than one functional groups is present in a compound.
Aldehydes, Ketones, Amines, Carboxylic acids, Esters, Nitriles

• A. Carboxylic acids < Esters < Nitriles < Aldehydes < Ketones
• B. Esters < Aldehydes < Ketones < Carboxylic acids < Nitriles
• C. Aldehydes < Ketones < Nitriles < Esters < Carboxylic acids
• D. Ketones < Aldehydes < Nitriles < Esters < Carboxylic acids

Answer 1

The correct option is D Ketones < Aldehydes < Nitriles < Esters < Carboxylic acids

When more than one functional group is present in a compound, then the functional group with most priority is used as a suffix whereas other functional groups present in the compound are used as prefix.
The order of priority is Ketones < Aldehydes < Nitriles < Esters < Carboxylic acids.
Generally, the functional group which shows its characteristics more dominantly even when present with other groups gets a higher priority.