Question

What is IUPAC name of \((\text{CH}_{3})_{3}\text{CBr}\)?

• A. 2-bromopropane
• B. 2-bromo-2-methylpropane
• C. 1-bromobutane
• D. tert-butyl bromide

Hint:

Choose the longest chain, number it and name the substituents alphabetically.

Answer 1

The Correct Option is B

Step 1: Understanding the Concept
\((\text{CH}_{3})_{3}\text{CBr}\) has a central carbon attached to Br and three methyl groups.

Step 2: Name it
The longest chain has three carbons, so the parent is propane.
C-2 carries both a bromo and a methyl group.

Step 3: Conclusion
Alphabetical order gives 2-bromo-2-methylpropane. 'tert-Butyl bromide' is only the common name.

Final Answer:
The IUPAC name is 2-bromo-2-methylpropane. \[ \boxed{\text{(B) }\text{2-bromo-2-methylpropane}} \]