question_answer

Aromatic nitriles (ArCN) are not prepared by reaction:

A) \[A{{g}^{+}}+2C{{N}^{-}}\xrightarrow{{}}{{[Ag{{(CN)}_{2}}]}^{-}}\]

B) \[\alpha \]

C) \[\beta \]

D) \[(N{{i}^{2+}})\]

Correct Answer: A

Solution :

Aryl halides \[+5\] does not show nucleophilic substitution reaction as they have strong \[4-1,4-2,\] bond. Above reaction involve nucleophilic substitution reaction. Thus \[4-4\] cannot be prepared by reaction of \[{{N}_{2}}O,NO,{{N}_{2}}{{O}_{3}},N{{O}_{2}}\] and \[{{N}_{2}}{{O}_{5}}\]. Only alkyl halide can be prepared by this method. \[4-1\] \[4-5\] \[{{H}_{2}}{{O}_{2}}\]