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Write the mechanism of the following reaction : nBuBr + KCN overset(EtOH - H_(2)O) to nBuCN |
Answer» Solution :KCN is a resonance hybrid of the following two contributing structures :  Thus , `CN^(-) ` ION is an ambident nucleophile . Therefore , it can attack the carbon atom of C - Br bond in n -BUBR either through C or N .SINCE C -C bond is stronger than C - N bond, therefore, attack occurs through C to FORM n- butyl CYANIDE 
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