Question

Complete the following chemical reaction:
${{C}_{6}}{{H}_{5}}C{{H}_{2}}C{{H}_{3}}\xrightarrow[(ii).Heat,Light]{(i).Br2}$

Answer 1

Hint : We should note here that nitrile is a group known to contain the carbon bonded with the triple bond with the nitrogen. Further propane nitrile is an organic compound with the formula ${{C}_{2}}{{H}_{4}}CN$ attached to phenyl.

Complete Step By Step Answer:
We should note here that nitrile is a group known to contain the carbon bonded with the triple bond with the nitrogen. Further it shows the sp hybridisation in the triply bonded structure. nitriles are also polar in nature and are further always directed towards the high dipole moments. Further talking about the question, we come to know that propanenitrile is an organic compound with the formula it is also called ethyl cyanide.
Further we should note that it is a simple aliphatic nitrile. The compound is further colourless, water soluble liquid. It is moreover used as a solvent and a precursor to other organic compounds. Further it is interesting to note here that it is prepared by the ammoxidation of propanol.
There are various methods through which the propanenitrile can be produced so firstly it can be produced by the dehydration of the propanamide, and further also be produced by the catalytic reduction of the acrylonitrile and various other and the following chemical reaction is given by;
${{C}_{6}}{{H}_{5}}C{{H}_{2}}C{{H}_{3}}\xrightarrow[(ii).Heat,Light]{(i).Br2}{{C}_{6}}{{H}_{5}}CH(Br)C{{H}_{3}}\xrightarrow{NaCN}{{C}_{6}}{{H}_{5}}CH(CN)C{{H}_{3}}$
Here ${{C}_{6}}{{H}_{5}}CH(CN)C{{H}_{3}}$ is $2-$ Phenyl propane nitrile.

Note :
It is interesting to note here that it is similar to the acetonitrile but it has slightly higher boiling point. Further we can say that it is a precursor to propylamine by hydrogenation and the propanenitrile is obtained as a byproduct of the electro dimerization of the acrylonitrile to adiponitrile.