COMEDK20269 May 2026Morning ShiftChemistryGeneral Organic ChemistryActual
Which one of the following is not the correct IUPAC name of the compound?
Options
- A3–Methylbutoxybenzene: C ₆ H ₅- O -( CH ₂)₂- CH -( CH ₃)₂
- B2–Bromo–3–methylbut–2–en–1–ol: ( CH ₃)₂- C = C ( Br )- CH ₂ OH
- C2,5–Dimethylhexane–1,3–diol: ( CH ₃)₂- CH - CH ₂- CH(OH) - CH ( CH ₂ OH )- CH ₃
- D2,2–Dimethyl–1–propoxycyclohexane:
Correct answer
D. 2,2–Dimethyl–1–propoxycyclohexane:
Step-by-step solution
Let us evaluate the IUPAC name for each given structure: Option (A): The structure is C ₆ H ₅- O - CH ₂- CH ₂- CH ( CH ₃)₂ . The alkyl group attached to the oxygen atom is a 3-methylbutyl group. Thus, the ether is named 3-methylbutoxybenzene. This name is correct. Option (B): The structure is CH ₃- C ( CH ₃)= C ( Br )- CH ₂ OH . The principal functional group is - OH , so the longest chain containing the - OH group and the double bond is selected and numbered from the right to give the - OH group the lowest locant