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How is the activation of benzene ring by...

How is the activation of benzene ring by amino group reduced by acetylating aniline during nitration ?

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How will you convert aniline to benzene ?

Why is NH_2 group of aniline acetylated before carrying out nitration?

How will you convert benzene into aniline ?

Explain how does -OH group attached to a carbon of benzene ring Activates it towards electrophilic substitution .

Acylation of — NH_2 group in aniline reduces its reactivity in electrophilic substitution reactions.

Explain the fact that in aryl ethers (i) the alkoxy group activates the benzene ring towards electrophilic substitution and (ii) it directs the incoming substituents to ortho -and para -positions in benzene ring .

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MODERN PUBLICATION-ORGANIC COMPOUNDS CONTAINING NITROGEN -EXERCISE
  1. Write the structures of A, B and C in the following reaction : C6H5N2^...

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  2. Why aniline a weaker base than methylamine?

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  3. How is the activation of benzene ring by amino group reduced by acetyl...

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  4. How is sulphanilic acid prepared from aniline ?

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  5. What happens when aniline reacts with K2Cr2O7 and H2SO4.

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  6. How are amines prepared from nitro alkanes?

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  7. How are amines prepared from alkyl halide?

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  8. How are amines prepared from amides?

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  9. How does benzene diazonium chloride react with : Water

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  10. How does benzenediazonium chloride react with : HNO2

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  11. How does benzene diazonium chloride react with : Cu2Cl2//HCl

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  12. Discuss Coupling reaction of benzenediazonium chloride.

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  13. Aniline does not undergo Friedel-Crafts reaction. Explain.

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  14. Identify the compounds (A) (B), (C), (D) in the following sequence of...

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  15. Why are aliphatic amines more basic than aromatic amines?

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  16. Why aromatic amines cannot be prepared by Gabriel phthalimide synthesi...

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  17. Give reason for the following statement- Mixture of 1% of phosphorus, ...

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  18. Write short notes on the followng : Hoffmann’s bromamide reaction.

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  19. Why is aniline less basic than ethylamine ?

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  20. Complete the following reactions : C6H5NH2 +CHCl3 +alc. KOH rarr

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