Question

What is the correct IUPAC name of the compound given below?

• A. 3-Bromo-4-ethyl-1-nitrobenzene
• B. 2-Bromo-1-ethyl-4-nitrobenzene
• C. 2-Bromo-4-nitro-1-ethylbenzene
• D. 5-Bromo-4-ethyl-1-nitrobenzene
  

Answer 1

The correct option is B 2-Bromo-1-ethyl-4-nitrobenzene

The numbering of the compound is done using lowest locant rule followed by alphabetical ordering.

So, the correct IUPAC name is 2-bromo-1-ethyl-4-nitrobenzene.