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Why does the given step does not oC Cur ...


Why does the given step does not oC Cur ..........

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The correct Answer is:
The given reaction does not oC Cur because on addition the ring lost its aromaticity and on deprotonation of `sigma-`complex it retains the arommaticity hence substituion reaction takes place.
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ALLEN-ALKENE, ALKANE & ALKYNE -EXERCISE-4[A]
  1. Why does the given step does not oC Cur ..........

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  2. Write the resonating structures for SO(3),NO(2) and NO(3)^(-),

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  3. C(6)H(4)(NO(2))CH(3) can form different isomers. Write three isomers. ...

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  4. Write the structure of the products formed in the following S(E) react...

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  5. Indicate the position of the electrophile in the following compounds :

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  6. Indicate the compound which can be nitrated most easily :

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  7. Indicate wrong electron-migration :

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  8. Indicate more stable carbocation and explain :

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  9. In case of meta-attack on aniline (where -NH(2) group is o-, p- direct...

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  10. What are the major products of the following :

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  11. C(2)H(5)OHoverset(PCl(5))rarr(A)overset(KCN)rarr(B)overset(H(3)O^(+))r...

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  12. CH(3)CH(2)CH(2)OHoverset(PBr(5))rarr(A)overset(KOH(Alc))rarr(B)overset...

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  13. Why tertiary alcohols react less rapidly with metallic sodium than do...

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  14. Explain why ArOR ethers are cleaved to give RI and ArOH rather than ...

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  15. Complete the following reactions:

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  16. Complete the following reactions: (a) (b)

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  17. Provide products in the following reactions:

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  18. Identify the products A and B giving proper explanation : (a)

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  19. Indicate bonds which are cleaved I: In basic contions II: in acidic ...

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  20. In the following S(N)2 reaction

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