Wed August 31, 2011 By: Piyush Das

Why arylcyanides can't be formed by the reaction on aryl halides and sodium cyanide?

Expert Reply
Thu September 01, 2011
aryl halides undergo nucleophilic substitution reaction and substitutes its halide ion with a nucleophile.
aryl halides has a  double bond character between  halogen and aryl ring.the bond is shorter  and stable so it is not displaced easily hence, halide is not substituted easily by the use of usual reagent like sodium cyanide.we need strong reagent like copper cyanide to form aryl cyanide.
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