JEE Main & Advanced Chemistry Aldehydes, Ketones Benzophenone, \[{{\mathbf{C}}_{\mathbf{6}}}{{\mathbf{H}}_{\mathbf{5}}}\mathbf{CO}{{\mathbf{C}}_{\mathbf{6}}}{{\mathbf{H}}_{\mathbf{5}}}\]

Benzophenone, \[{{\mathbf{C}}_{\mathbf{6}}}{{\mathbf{H}}_{\mathbf{5}}}\mathbf{CO}{{\mathbf{C}}_{\mathbf{6}}}{{\mathbf{H}}_{\mathbf{5}}}\]

Category : JEE Main & Advanced

(1) Method of preparation    

 

(i) From alkyl benzenes    

 

\[{{C}_{6}}{{H}_{5}}-C{{H}_{2}}-{{C}_{6}}{{H}_{5}}+2O\xrightarrow{HN{{O}_{3}}}{{C}_{6}}{{H}_{5}}CO{{C}_{6}}{{H}_{5}}\]    

 

(2) Physical properties : It is a colourless, pleasant  smelling  solid.    

 

(3) Chemical properties : It shows the characteristic properties of keto group but does not give bisulphite compounds.    

 

(i) Reduction :    

 

\[{{C}_{6}}{{H}_{5}}CO{{C}_{6}}{{H}_{5}}+2H\xrightarrow{Na-Hg}\underset{\text{Diphenyl carbinol}}{\mathop{{{C}_{6}}{{H}_{5}}.CHOH{{C}_{6}}{{H}_{5}}}}\,\]    

 

(ii) Clemmenson reduction :    

 

\[{{C}_{6}}{{H}_{5}}CO{{C}_{6}}{{H}_{5}}\underset{HCl}{\mathop{\xrightarrow{Zn/Hg}}}\,\underset{\text{Diphenyl methane}}{\mathop{{{C}_{6}}{{H}_{5}}C{{H}_{2}}{{C}_{6}}{{H}_{5}}}}\,+{{H}_{2}}O\]    

 

(iii) Fusion with KOH :    

 

\[{{C}_{6}}{{H}_{5}}CO{{C}_{6}}{{H}_{5}}+KOH\xrightarrow{\text{Fuse}}{{C}_{6}}{{H}_{5}}COOK+{{C}_{6}}{{H}_{6}}\]

 

\[{{C}_{6}}{{H}_{5}}CO{{C}_{6}}{{H}_{5}}+{{H}_{2}}O\underset{\text{Ether}}{\mathop{\xrightarrow{\text{Pot}\text{. tert}\text{. Butoxide}}}}\,\underset{\text{Benzoic acid}}{\mathop{{{C}_{6}}{{H}_{5}}COOH}}\,+{{C}_{6}}{{H}_{6}}\]

 



LIMITED OFFER HURRY UP! OFFER AVAILABLE ON ALL MATERIAL TILL TODAY ONLY!

You need to login to perform this action.
You will be redirected in 3 sec spinner

Free
Videos