Q136 / 200 · MHT CET - Medical 2026 (26 April Shift 1) · Chemistry
Identify best method for preparation of Alkyl fluoride from following
- AFinkelstein reaction
- Correct answerBSwartz reaction
- CSandmeyer's reaction
- DWurtz reaction
Solution
Swarts reaction is the best method for the preparation of alkyl fluorides. In this reaction, alkyl chlorides or bromides are heated in the presence of metallic fluorides such as $AgF$, $Hg_2F_2$, $CoF_2$, or $SbF_3$ to form alkyl fluorides.
$R-X + AgF \rightarrow R-F + AgX$ (where $X = Cl, Br$)
Finkelstein reaction is used for the preparation of alkyl iodides.
Sandmeyer's reaction is used for the preparation of aryl halides.
Wurtz reaction is used for the preparation of higher alkanes.
Answer: Swartz reaction
$R-X + AgF \rightarrow R-F + AgX$ (where $X = Cl, Br$)
Finkelstein reaction is used for the preparation of alkyl iodides.
Sandmeyer's reaction is used for the preparation of aryl halides.
Wurtz reaction is used for the preparation of higher alkanes.
Answer: Swartz reaction
Hence, the correct answer is option: 'B'.