Practicing Success

Target Exam

CUET

Subject

Chemistry

Chapter

Organic: Haloalkanes and Haloarenes

Question:

What is the IUPAC name of the given compound?

Options:

 1-Bromo-3-methylprop-2-ene

3-Bromo-1-methylpropene

 1-Bromobut-2-ene

4-Bromobut-2-ene

Correct Answer:

 1-Bromobut-2-ene

Explanation:

The longest chain of carbon atoms is 4 (butene) and the numbering should begin from the Br side to satisfy the lowest set of locants rule. So, Br is at C-1 and double bond is at C-2.