MolSynapsequestion bank
MolSynapse / Question bank / IUPAC Nomenclature and Structural Isomerism / Functional group priority in drawn compounds
JEE Advanced levelSingle correct optionDifficulty 3 of 3nm246

What is the IUPAC name of the compound shown? Ignore any stereodescriptors.

  1. Amethyl 3-chloropent-4-enoate
  2. Bmethyl 2-chloropent-3-enoate
  3. Cmethyl 4-chlorobut-2-enoate
  4. Dmethyl 4-chloropent-2-enoate

Answer: D

The compound is methyl 4-chloropent-2-enoate. The ester is the principal group: the acyl chain is numbered from the C=O carbon (C1), giving the double bond at C2 and chlorine at C4. The group on oxygen is methyl. The other names shift a locant or shorten the chain.
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