Aryl fluoride may be prepared from arene diaz | vedclass

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Question

(A) Aryl fluorides are prepared by the Balz-Schiemann reaction. In this reaction,arene diazonium chloride is treated with fluoroboric acid $(HBF_4)$ t

Vedclass · Accepted Answer

$HBF_4 / \Delta$

Vedclass · Answer

(A) Aryl fluorides are prepared by the Balz-Schiemann reaction. In this reaction,arene diazonium chloride is treated with fluoroboric acid $(HBF_4)$ to form arene diazonium fluoroborate,which upon heating decomposes to give aryl fluoride,nitrogen gas,and boron trifluoride $(BF_3)$. The reaction is: $Ar-N_2^+Cl^- + HBF_4$ $\rightarrow Ar-N_2^+BF_4^- + HCl$ $\rightarrow Ar-F + N_2 + BF_3$.

Aryl fluoride may be prepared from arene diazonium chloride using

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