MCQ
Aromatic nitriles $(ArCN)$ are not prepared by reaction
- ✓$ArX + KCN$
- B$ArN_2^ + + CuCN$
- C$ArCON{H_2} + {P_2}{O_5}$
- D$ArCON{H_2} + {SOCL_2}$
✓
Answer
Correct option: A.
$ArX + KCN$
a
(a) Halogen have $-I$ and $+M$ effect by which its electron delocalized in benzene ring by resonance & due to its $-I$ effect its bonded with benzene ring and cannot be substitute by $C{N^ - }$ & show the inertness against $KCN$ while other option gives Aromatic nitrile
(a) Halogen have $-I$ and $+M$ effect by which its electron delocalized in benzene ring by resonance & due to its $-I$ effect its bonded with benzene ring and cannot be substitute by $C{N^ - }$ & show the inertness against $KCN$ while other option gives Aromatic nitrile
$ArN_2^ + + CuCN \to ArCN + {N_2} + C{u^ + }$
$ArCON{H_2}\mathop {\xrightarrow{{{P_2}{O_5}}}}\limits_{ - {H_2}O} ArCN$
$ArCON{H_2} + SOC{l_2} \to ArCN + S{O_2} + 2HCl$
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