Question:

When tert butyl bromide is heated with silver fluoride the major product obtained is

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Swarts Reaction is the best method for synthesizing alkyl fluorides from other halides.
Updated On: May 14, 2026
  • 1-Fluoro-2-methylpropane
  • 2-Fluoro-2-methylpropane
  • 1-Flurobutane
  • 2-Flurobutane
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The Correct Option is B

Solution and Explanation


Step 1: Concept
Alkyl fluorides are prepared by heating alkyl chlorides or bromides in the presence of metallic fluorides like $AgF$, known as the Swarts reaction.

Step 2: Meaning
Tert-butyl bromide is a tertiary alkyl halide, and $AgF$ acts as the fluorinating agent.

Step 3: Analysis
The bromine atom in $(CH_3)_3C-Br$ is substituted by a fluorine atom to form $(CH_3)_3C-F$.

Step 4: Conclusion
The IUPAC name for $(CH_3)_3C-F$ is 2-fluoro-2-methylpropane. Final Answer: (B)
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