In order to prepare flurobenzene from benzenediazonium chloride, which of the following reagents is used?
A
Fluorine
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B
HF
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C
Hydroflurosillic acid
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D
Fluroboric acid
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Solution
The correct option is D Fluroboric acid Diazonium chloride on treating with HF/BF3 yields benzene diazonium fluoroborate. This is when heated undergoes decomposition to give fluorobenzene. It is also called Balz-Schiemann reaction. The reaction is as follows: