Home
Class 12
CHEMISTRY
When a nucleophile encounters a ketone, ...

When a nucleophile encounters a ketone, the site of attack is :

A

the carbon atom of the carbonyl

B

the oxygen atom of the carbonyl

C

both the carbon and oxygen atoms, with equal probability

D

no attack occurs as ketones do not react with nucleophiles

Text Solution

Verified by Experts

The correct Answer is:
A
`R-underset(deltao+)overset(O)overset(||)(C)-R` more positive on carbon of carbonyl.
Promotional Banner

Topper's Solved these Questions

  • ALDEHYDES AND KETONES

    MS CHOUHAN|Exercise LEVEL-2|20 Videos

  • ALCOHOL,ETHERS AND EPOXIDES

    MS CHOUHAN|Exercise SUBJECTIVE PROBLEMS|1 Videos

  • ALKYL HALIDES (ELIMINATION REACTION)

    MS CHOUHAN|Exercise LEVEL-2|25 Videos

Similar Questions

Explore conceptually related problems

What are ambident nucleophiles ?

AN example of nucleophile is

Active site is

When the body encounters with the same pathogen for the second time, the response is

Discuss the effect of the nucleophile and substrate on the mechanism of nucleophilic substitution

What are nucleophiles ? Give two examples

What is the site of photosynthesis ?

SN^1 reaction is given by alkylhalide which forms stable carbocation during reaction. The carbonation, has sp^2 hybridisation. In SN^1 reaction, the attack of the nucleophile to carbocation inter mediate is from either side. In SN^2 reaction the attacking nucleophile attacks from the back leading to the formation of inversion complex. Alcohol reacts with PCI_5 to give alkyl chloride by an internal attack of nucleophile with in the molecule. In the following reaction

SN^1 reaction is given by alkylhalide which forms stable carbocation during reaction. The carbonation, has sp^2 hybridisation. In SN^1 reaction, the attack of the nucleophile to carbocation inter mediate is from either side. In SN^2 reaction the attacking nucleophile attacks from the back leading to the formation of inversion complex. Alcohol reacts with PCI_5 to give alkyl chloride by an internal attack of nucleophile with in the molecule. In the following reaction

SN^1 reaction is given by alkylhalide which forms stable carbocation during reaction. The carbonation, has sp^2 hybridisation. In SN^1 reaction, the attack of the nucleophile to carbocation inter mediate is from either side. In SN^2 reaction the attacking nucleophile attacks from the back leading to the formation of inversion complex. Alcohol reacts with PCI_5 to give alkyl chloride by an internal attack of nucleophile with in the molecule. In the following reaction . If R is H - undersetoverset(|)(D)oversetunderset(|)(CH_3)(C ) - R - OH underset(Py)overset(SOCl_2)(to) R - Cl + SO_2 + HCl

MS CHOUHAN-ALDEHYDES AND KETONES-LEVEL-2
  1. When a nucleophile encounters a ketone, the site of attack is :

    Text Solution

    |

  2. Select the best choice for example (A to L) from the examples (a to n)...

    Text Solution

    |

  3. The following questions refer to the compounds (A to G) shown below :

    Text Solution

    |

  4. Match of the column :

    Text Solution

    |

  5. Complete the following table.

    Text Solution

    |

  6. Consider the following reactions and answer A and B. Suggest a re...

    Text Solution

    |

  7. Yield of each step as actually carried out in the laboratory is given ...

    Text Solution

    |

  8. Degree of unsaturation present in compound (A + B + C) is ?

    Text Solution

    |

  9. Within each set, which compound should be more reactive toward carbony...

    Text Solution

    |

  10. Match the Column (I) and Column (II). (Matrix)

    Text Solution

    |

  11. Consider reactions A through F. Those carbon atoms undergoing change, ...

    Text Solution

    |

  12. Consider the possible formation of an aldehyde or ketone product when ...

    Text Solution

    |

  13. Wittig reaction : The reaction of a phosphorus ylide with an aldehyd...

    Text Solution

    |

  14. Wittig reaction : The reaction of a phosphorus ylide with an aldehyd...

    Text Solution

    |

  15. Wittig reaction : The reaction of a phosphorus ylide with an aldehyd...

    Text Solution

    |

  16. Wittig reaction : The reaction of a phosphorus ylide with an aldehyd...

    Text Solution

    |

  17. Wittig reaction : The reaction of a phosphorus ylide with an aldehyd...

    Text Solution

    |

  18. Wittig reaction : The reaction of a phosphorus ylide with an aldehyd...

    Text Solution

    |

  19. Match the column :

    Text Solution

    |

  20. Reactant (A) is :

    Text Solution

    |

  21. Product (B) is :

    Text Solution

    |