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  • Give the structures of A B and C in the following reactions: (ii) C_6 H_5 N_2Cl

13.9     Give the structures of A, B and C in the following reactions:

                (ii) C_{6}H_{5}N_{2}Cl\xrightarrow[]{CuCN}A\xrightarrow[]{H_{2}O/H^{+}}B\xrightarrow[\Delta ]{NH_{3}}C

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The first part is the Sandmeyers reaction so CN replaces the N_{2}Cl of the reactant and the product (A) is cynobenzene (C_{6}H_{5}CN). On acidic hydrolysis of cynobenzene give product (B) benzoic acid (C_{6}H_{5}COOH) and benzoic acid react with ammonia (heat) it produces product (C)benzamide (C_{6}H_{5}CONH_{2})
The structure of A, C and B are-

 

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