1.

Which of thefollowingreaction is knownas "Balz-Schiemannreaction" ?

Answer»

`C_(6) H_(5) N_(2)^(+) CI^(-) + HBF_(4) toC_(6) H_(5)N_(2)^(+)BF_(4)^(-) overset( DELTA ) (to)C_(6)H_(5) F`
`C_(6) H_(5) - NH_(2)overset( CHCI + 3KOH) underset( Delta ) (to) C_(6) H_(5)- N^(+) = C^(-)`
`C_(6) H_(5)- N_(2)^(+) CI^(-) overset(Cu- Powder) underset( HX) (to) C_(6) H_(5)- X+ N_(2)+CuCI`
`C_(6) H_(5) CONH_(2) overset( Br_(2)+ 4NaOH ) underset( Delta) (to)C_(6) H_(5) -NH_(2)+ Na_(2) CO_(3) +2NaBr+ 2H_(2) O`

Solution :Introduction F- groupin presence of `HBF_(4)` iscalledBalz Schiemann REACTION


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