The IUPAC name of the compoundF1 Madhuri Engineering 29.08.2022 D28is ________.

  1. 3-keto-2-methylhex-5-enal
  2. 3-keto-2-methylhex-4-enal
  3. 5-formylhex-2-en-3-one
  4. 5-methyl-4-oxohex-2-en-5-al

Answer (Detailed Solution Below)

Option 2 : 3-keto-2-methylhex-4-enal
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Detailed Solution

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Explanation:

  • The longest chain has six carbon atoms.
  • So the parent name of the compound is hex.
  • There are three functional groups present in the compound: Aldehyde, Ketone, and alkene.
  • The main priority of the functional group is aldehyde and ketone and alkene are substituents.
  • According to IUPAC nomenclature, the suffix name of the aldehyde is -al, the name of substituent ketone is -keto, and the name of alkene is -en.

F1 Madhuri Engineering 29.08.2022 D29

  • There is one methyl group attached to carbon number-2.
  • Hence, the IUPAC name of the compound is 3-keto-2-methylhex-4-enal.
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