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Fundamentals of organic chemistry
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Resonance in aromatic compounds
(VI) Resonance in aromatic compounds
Phenol is acidic in nature due to resonance which develops +ve charge on 'O' atom and releases H in the solution. Due to negative charge at ortho and para position of benzene nucleus attack of electrophile takes place at o – & p – positions.



Prob. What is the separation test between following ?



(a) Directive Influences of functional groups.



 

 


Ans: As the number of – NO2 group increases, positive charge on carbon atom increases so speed of attack of np also increases.
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