AIIMS 2018 Chemistry Nomenclature MCQ Question
Give IUPAC name of:
2–cyano–5–methyl hept–3–enal
2–formyl–5–methyl hept–3–enenitrile
2–oxo–5–methyl hept–3–ene–1–nitrile
1–cyano–1–formyl–4–methyl hex–2–ene
Correct Answer
Detailed Explanation
The name "2–formyl–5–methylhept–3–enenitrile" indicates a compound with a heptene backbone, where the highest priority functional group is the formyl group (–CHO) at carbon 2, followed by a methyl group at carbon 5, and a nitrile group (–C≡N) at carbon 3. This nomenclature adheres to IUPAC rules, which prioritize functional groups based on their reactivity and presence in the molecule. Other options are not applicable as they do not provide valid names or structures relevant to the compound described. Understanding the hierarchy of functional groups is crucial for correctly naming organic compounds.
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