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13.11       Complete the following reactions:

                    (vii) C_{6}H_{5}N_{2}Cl\xrightarrow[(ii)NaNO_{2}/Cu,\Delta )]{(i) HBF_{4})} 

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In this reaction, the chloride ion is replaced by BF_{4}^{-} ion. When diazonium fluoroborate is heated with aqueous sodium nitrite in the presence of copper, the diazonium group is replaced by –NO2 group.

C_{6}H_{5}N_{2}Cl\xrightarrow[(ii)NaNO_{2}/Cu,\Delta )]{(i) HBF_{4})} C_{6}H_{5}NO_{2}+N_{2}+NaBF_{4}

 

 

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