What are the products of the following reaction?

No reaction happens. The substrate is unaffected

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The product is benzyl fluoride

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The major product is a nitrile attached to the benzene ring

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None of the above

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Solution

The correct option is B
The product is benzyl fluoride

18-crown-6 is an ether which traps $K^{+}$ from $K F$ and gets $F^{-}$ to act as a nucleophile in a rare example.
$C H_{3} C N$ acts only as a solvent and does not take part in the reaction. So the product is:

This is a nifty method to synthesize alkyl fluorides.

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Benzene + (C H_{3})_{2} C H C H_{2} C l A l C l_{3} - ------ \to (anhydrous)

E 1

E_{2}

E 1

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