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Conjugation of electron withdrawing grou...

Conjugation of electron withdrawing groups, e.g., `-CHO, -overset(O)overset("||")(C)-R, -overset(O)overset("||")(C)-OR, -C equiv N, -NO_(2)` activates nucleophilic attack in halobenzene. The order of reactivity of these group towards nucleo- philic aromatic substitution.

A

`-NO_(2) gt -C equiv N gt -overset(O)overset("||")(C)-H gt-overset(O)overset("||")(C)-R gt -overset(O)overset("||")(C)-OR`

B

`-overset(O)overset("||")(C)-H gt -overset(O)overset("||")(C)-R gt -overset(O)overset("||")(C)-ORgt -C equiv N gt -NO_(2)`

C

`-C equiv N gt -NO_(2) gt -overset(O)overset("||")(C)-H gt -overset(O)overset("||")(C)-R gt-overset(O)overset("||")(C)-OR`

D

`-overset(O)overset("||")(C)-H gt -NO_(2) gt -C equiv N gt -overset(O)overset("||")(C)-OR gt -overset(O)overset("||")(C)-R`

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The correct Answer is:
A
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MOTION-AROMATIC COMPOUND-Exercise - 2 (Level-II)
  1. Which of the following carbocations is expected to be most stable ?

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  2. Which of the following structures correspond to the product expected, ...

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  3. Conjugation of electron withdrawing groups, e.g., -CHO, -overset(O)ove...

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  4. Which of most reactive towards nucleophilic aromatic substitution.

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  5. Nitro benzene reacts with Me-overset(O)overset("||")(C)-Cl in presence...

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  6. Which of the following is ortho-para directing group

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  7. The structure of the compound that gives a tribromo derivative on trea...

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  8. Amongst the following, moderately activating groups is

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  9. Which of the following is ortho para directing

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  10. Of the species PhSH, Ph underset(O)underset("||")(S)R, ph underset(O)u...

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  11. Which of the following group(s) activate the benzene ring towards elec...

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  12. Statement-1 : Rate of nitration is C(6)H(6) cong C(6) D(6) cong C(6)T(...

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  13. Product (A) will be

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  14. Product (A) is

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  15. Which aromatic compound is obtained when noctane undergoes catalytic h...

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  16. Benzoic acid may be prepared by the oxidation of:

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  17. Isopropylbenzene can be prepared by :

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  18. In which of the following reaction t-butylbenzene is formed:

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  19. Product is

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  20. Which of the following reactions of bezene proves the presence of thre...

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