Chemistry - Nomenclature Question with Solution | TestHub

Identify the main group: The acyl chloride (–COCl) group has the highest priority, so the carbon chain is numbered starting from this carbonyl carbon (C-1).

Determine the parent chain: The longest continuous carbon chain containing the principal functional group has 2 carbon atoms, making the parent suffix ethanoyl chloride.

Identify the substituents: The middle carbon (C-2) has a ketone oxygen (2-oxo) and an amide side group (–CONH₂, known as 2-carbamoyl).

Alphabetical ordering: Arranging the prefixes alphabetically ("carbamoyl" before "oxo") gives the complete IUPAC name: 2-Carbamoyl-2-oxoethanoyl chloride.