What is the IUPAC name of CH₃CH=C(CH₃)CH₃?
Correct answer D. 2-Methylbut-2-ene
Explanation
The longest chain containing the double bond has four carbons. Numbering to give the double bond the lowest locant places it at C2, with the methyl branch also on C2: 2-methylbut-2-ene.
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