Nitrogen Containing Compounds Question 70
Question: Aromatic nitriles (ArCN) are not prepared by reaction [AIIMS 2004]
Options:
A) ArX + KCN
B) $ ArN_2^{+}+CuCN $
C) $ ArCONH_2+P_2O_5 $
D) $ ArCONH_2+SOC{l_{ 2}} $
Show Answer
Answer:
Correct Answer: A
Solution:
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}^{+}} $ $ ArCONH_2\underset{-H_2O}{\mathop{\xrightarrow{P_2O_5}}},ArCN $ $ ArCONH_2+SOCl_2\to ArCN+SO_2+2HCl $
BETA
