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Grade 12th passOrganic Chemistry

Why benzoic acid does not give friedal crafts reactions

Profile image of Jeevanandham
6 Years agoGrade 12th pass
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2 Answers

Profile image of Arun
6 Years ago
Friedel craft reactions are favoured by ring activating groups like alkyl, halogen, etc. - As carboxyl(-COOH) is ring deactivating group, it prevents compound from this reaction. - Also benzoic acid reacts with AlCl3 itself to form benzoyl chloride. - Therefore, benzoic acid don't undergo Friedel Craft's acylation
Profile image of Vikas TU
6 Years ago
Dear student 
-COOH attached to the benzene ring is electron withdrawing and ring deactivating,  The reagent then undergoes polymerization, degradation and is not available for the reaction with the substrates of low reactivity.
Hope this helps 
Good Luck 

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