Aromatic nitriles `(ArCN)` are not prepared by reaction .

Options

A. `ArX+KCN`
B. `ArN_(2)CI+CuCN`
C. `ArCONH_(2)+P_(2)O_(5)`
D. `ArCONH_(2)+SOCI_(2)`

Answer

A

Explanation

Aryl halides , being inert toward nucleophilic aromatic substitution do not react with `KCN` under normal conditions
`C_(6)H_(5)CIunderset(heat)overset("CuCN in DMF")rarrC_(6)H_(5)CN`
`ArN_(2)Cioverset(CuCN)rarrArCN`(Sandmeyer's reaction)
`ArCONH_(2)underset(SOCI_(2))overset(P_(2)O_(5))rarrArCH+H_(2)O`(Dehydration) .