Home
Class 12
CHEMISTRY
The o,p-directing byt deactivating group...

The o,p-directing byt deactivating group is

A

`-NH_(2)`

B

`-OH`

C

R-(alkyl)

D

X-(halogen)

Text Solution

Verified by Experts

The correct Answer is:
D
Due to large size of X(halogen) the lone pair does not participate into resonance with C of benzene fully. Further X is more electronegative than C.
Promotional Banner

Topper's Solved these Questions

  • HALOALKANES AND HALOARENES

    DINESH PUBLICATION|Exercise Brain storming multiple choice questions|11 Videos

  • IONIC EQUILIBRIUM

    DINESH PUBLICATION|Exercise UNIT TEST -2|30 Videos

Similar Questions

Explore conceptually related problems

(A) Clorine is ortho and para directing but deactivating group. ( R) Inductive effect of chlorine atom overcoms the resonance effect.

Name an ortho-and para-directing deactivating group.

Meta-directing and deactivating group in the aromatic electrophilic substitution is :

Which of the following is an o-, p- directing but deactivating substituent in an electrophilic aromatic substitution :

The typical reaction of benzene and other aromatic compounds are electrophilic substitution. Presence of electron donating group activates the ring towards electrophilic substitution, while presence of electron withdrawing group deactivates the ring towards electrophilic substituion but at the same time activates the ring towards nucleophilic subsituion. Some groups are predominantly meta-directing and all of these are deactivating. Except halogen, most of the o- and p- directing groups are activating groups. underset(Delta)overset(C_(2)H_(5)Cl.AlCl_(3))rarr(A) major. A is trisubstituted benzene. The structure of A is :

In the electrophilic substituion of benzene ring, the second substituent is directed by the group already present. Electron releasing groups (+I and +M) are ortho-para-directing and activating, whreas the electron withdrawing groups (-I and -M) are meta-directing and deactivating. Halogens are placed under the category of +T (Tautomeric) groups because they have -Ibdyctuve abd +Mesomeric effect. These groups are deactivating but ortho-para-directing. In the introduction of third group to the benzene ring, the product of minimum steric gindrance is formed. A deactivating group in electrophilic substitution reaction :

DINESH PUBLICATION-HYDROCARBONS-All Questions
  1. Each of the following alkul halide reacts with sodium metal in presnce...

    Text Solution

    |

  2. Formation of butane by the action of zinc on ethyl bromide is known as

    Text Solution

    |

  3. The o,p-directing byt deactivating group is

    Text Solution

    |

  4. Which of the following carbocations is excepted to be most stable

    Text Solution

    |

  5. The function of CaO in the reaction RCO(2)^(-) underset("Heat")overs...

    Text Solution

    |

  6. Cyclohexene on ozonolysis yeilds

    Text Solution

    |

  7. Hydration of acetylene to ethanal is catalysed by

    Text Solution

    |

  8. The most reactive hydrocarbon is

    Text Solution

    |

  9. Propene, CH(3)-CH = CH(2), can be converted to 1-propanol by oxidation...

    Text Solution

    |

  10. Alkenes containing termincal double bond can be reduced by sodium in l...

    Text Solution

    |

  11. Benzene on ozolysis yields.

    Text Solution

    |

  12. If n is the number of carbon atoms in the potassium salt of a carboxyl...

    Text Solution

    |

  13. An alkene is formed from a carbocation by

    Text Solution

    |

  14. Abstraction of a sec H-atm propane gives……..radical

    Text Solution

    |

  15. In which of the following hydrocarbons would give a red precipitate on...

    Text Solution

    |

  16. Gasoline contains hydrocarbons in the range

    Text Solution

    |

  17. The homolytic fission of hydrocarbons in the range

    Text Solution

    |

  18. The structure of the intermeidate of the following reaction is CH(3)...

    Text Solution

    |

  19. Whch of the following product is formed when acetylene is passed into ...

    Text Solution

    |

  20. The product of following reaction CH(3)-underset(CH(3))underset(|)ov...

    Text Solution

    |