MolSynapsequestion bank
MolSynapse / Question bank / IUPAC Nomenclature and Structural Isomerism / Functional group priority in drawn compounds
JEE Advanced levelOne or more correct optionsDifficulty 3 of 3nm248

Which of the following statements about the compound shown are correct? Use the priority order acid > ester > acid halide > amide.

  1. AThe amide is the principal characteristic group.
  2. BThe ester is the principal group, so the compound is named as an alkyl alkanoate.
  3. CThe correct name is methyl 3-amino-3-oxopropanoate.
  4. DThe name 3-methoxy-3-oxopropanamide is also correct.

Answer: B, C

The compound is methyl 3-amino-3-oxopropanoate. Esters outrank amides, so the molecule is an alkyl propanoate with the amide carbonyl expressed as the prefixes amino and oxo at C3. Naming it as an amide (3-methoxy-3-oxopropanamide) reverses the priority.
Practice IUPAC Nomenclature and Structural Isomerism More on Functional group priority in drawn compounds
Previous questionNext question

More questions on Functional group priority in drawn compounds