Chemistry · Nomenclature (Trivial and IUPAC)

Correct IUPAC naming of the given compound is:

Correct IUPAC naming of the given compound is:

  • A. pent-3-ene
  • B. 2, 2-diethylethene
  • C. hexene
  • D. 2-ethylbutene

Step-by-step solution

The compound (CH3CH2)2C=CH2 (often mistakenly called 2,2-diethylethene) has a four-carbon chain with a double bond; the correct IUPAC name is 2-ethylbut-1-ene. Among the options, '2-ethylbutene' (D) is the closest, as it correctly identifies the parent chain and substituent, though it omits the double bond locant. Options A, B, and C are incorrect: A 'pent-3-ene' would be a five-carbon chain, B '2,2-diethylethene' is a non-IUPAC name, and C 'hexene' is too vague.
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