why benzoic acid and benzaldehyde not showing friedel craft acylation and friedel craft alkylation
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Answer:
Explanation:
Why benzoic acid does not give Friedel Craft reaction?
In short, it can be stated as the alkylation of the aromatic rings by the Friedel-Craft reaction method. The -COOH gr (carboxylic group) attached to the benzene ring is electron withdrawing and ring deactivating. Benzoic acid does not undergo Friedel-Craft Alkylation Reaction.
Why benzaldehyde does not give Friedel Craft reaction?
Friedel–Crafts acylation involves the acylation of aromatic rings. ... This reaction has several advantages over the alkylation reaction. Due to the electron-withdrawing effect of the carbonyl group, the ketone product is always less reactive than the original molecule, so multiple acylations do not occur.
Friedel-Crafts reactions cannot be preformed then the aromatic ring contains a NH2, NHR, or NR2 substituent. The lone pair electrons on the amines react with the Lewis acid AlCl3. This places a positive charge next to the benzene ring, which is so strongly activating that the Friedel-Crafts reaction cannot occur.Jan 28, 2019