Question

The correct IUPAC name of  

is:
 

• A. 1-Bromo-2-methylbutane
• B. 1-Bromo-2-ethylpropane
• C. 1-Bromo-2-ethyl-2-methyl ethane
• D. 2-Methyl-1-bromobutane

Hint:

When naming organic compounds, first identify the longest carbon chain and then number the chain to give the lowest possible numbers to the substituents.

Answer 1

The Correct Option is A

The structure given is CH$_3$-CH-CH$_2$-Br with an ethyl group attached to the second carbon. According to IUPAC nomenclature:
1. The longest chain contains 4 carbon atoms, so it is butane.
2. The bromo group is attached to the first carbon (from the left side).
3. A methyl group is attached to the second carbon.
Thus, the correct IUPAC name is 1-Bromo-2-methylbutane.