question_answer

Identify A and B in each of the following processes : (i) \[C{{H}_{3}}C{{H}_{2}}Cl\xrightarrow[{}]{\text{NaCN}}\,A\,\xrightarrow[\text{Ni/}{{\text{H}}_{\text{2}}}]{\text{reduction}}B\]   (ii) \[{{C}_{6}}{{H}_{5}}N{{H}_{2}}\xrightarrow{NaN{{O}_{2}}/HCl}\,A\xrightarrow[O{{H}^{-}}]{{{C}_{6}}{{H}_{5}}\,N{{H}_{2}}}\,B\].

Answer:

(i)\[\underset{Chloroethane}{\mathop{C{{H}_{3}}C{{H}_{2}}Cl}}\,\xrightarrow[-NaCl]{NaCN}\underset{\Pr opanenitrile\,(A)}{\mathop{C{{H}_{3}}C{{H}_{2}}C\equiv N}}\,\]\[\xrightarrow[\text{Ni/}{{\text{H}}_{\text{2}}}]{\text{reduction}}\,\underset{\text{Propan-1-amine}\,\text{(B)}}{\mathop{C{{H}_{3}}C{{H}_{2}}C{{H}_{2}}N{{H}_{2}}}}\,\] (ii)