Which of the following is a correct IUPAC name?
A) 1,2-dichloro-4-bromobenzene
B) 1-bromo-3,4-dichlorobenzene
C) 4-bromo-1,2-dichlorobenzene
D) 3,4-dichloro-1-bromobenzene

Question

Quizplus · Accepted Answer

The correct IUPAC name for the compound is obtained by numbering the carbons in such a way that the substituents are assigned the lowest possible numbers. In this case, the bromo group has priority and is assigned the lower number, so it is placed at position 4. Then, the two chlorine atoms are placed at positions 1 and 2, giving the name 4-bromo-1,2-dichlorobenzene.

Which of the Following Is a Correct IUPAC Name