First slide

Nomenclature

Question

What is the correct IUPAC name of the following compound?

Easy

A

2, 5-dibromo-1, 4-dichlorobenzene
B

1, 4-dibromo-2, 5-dichlorobenzene
C

3, 5-dibromo-1, 4-dichlorobenzene
D

1, 4-dibromo-3, 5-dichlorobenzene

Solution

Numbering starts from bromine's carbon as
This is the lowest number to locants (1,2,4,5) as well as follow alphabetical order.

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