Home
Class 12
CHEMISTRY
The product formed during Hell-Volhard-Z...

The product formed during Hell-Volhard-Zelinsky reaction is

A

`underset(X) underset(|)(R-CH-)COOH`

B

`R-CH_(2)-COX`

C

`underset(X) underset(|)(R-C-)COOH`

D

`underset(X) underset(|)(R-CH-)CH_(2)-COOH`

Text Solution

Verified by Experts

The correct Answer is:
A
Carboxylic acids having an `alpha-` hydrogen are halogenated at the `alpha`- position on treatement with chlorine or bromine in the presence of small amunt of red phosphorus to give `alpha`-halocarboxylic acids. The reaction is know as Hell- Volhard-Zelinsky reaction.
Promotional Banner

Topper's Solved these Questions

  • ALDEHYDES, KETONES AND CARBOXYLIC ACIDS

    MHTCET PREVIOUS YEAR PAPERS AND PRACTICE PAPERS|Exercise MHT CET CORNER|21 Videos

  • ALDEHYDES, KETONES AND CARBOXYLIC ACIDS

    MHTCET PREVIOUS YEAR PAPERS AND PRACTICE PAPERS|Exercise MHT CET CORNER|21 Videos

  • ALCOHOLS, PHENOLS AND ETHERS

    MHTCET PREVIOUS YEAR PAPERS AND PRACTICE PAPERS|Exercise MHT CET Corner|33 Videos

  • ALKANES

    MHTCET PREVIOUS YEAR PAPERS AND PRACTICE PAPERS|Exercise EXERCISE 2|20 Videos

Similar Questions

Explore conceptually related problems

The Hell-Volhard-Zelinsky reaction is used for preparing

The product formed in the reaction

The product formed in the reaction

Carboxylic acids having atleast one alpha -hydrogen react with Cl_(2) or Br_(2) in the presence of phosphorus ( or a phosphorus halide) to give alpha -halo acids. This reaction is known as Hell-Volhard-Zelinsky reaction (HVZ reaction), R-CH_(2)COOHunderset(Delta)overset(P//Br_(2))toR-overset(Br)overset(|)"CH"-COOH The HVZ reaction is limited to the formation of alpha -chloro and a-bromo acids and it is sometimes awkward to carry out. The reagents ( X_(2) and P) are noxious and the reaction time is often long and the conditions of reaction are harsh. CH_(3)COOHoverset(Br_(2)//Red P)to(A)overset(NaCN)to(B)overset(HOH//H^(+))to(C ) The product (C) will be:

Carboxylic acids having atleast one alpha -hydrogen react with Cl_(2) or Br_(2) in the presence of phosphorus ( or a phosphorus halide) to give alpha -halo acids. This reaction is known as Hell-Volhard-Zelinsky reaction (HVZ reaction), R-CH_(2)COOHunderset(Delta)overset(P//Br_(2))toR-overset(Br)overset(|)"CH"-COOH The HVZ reaction is limited to the formation of alpha -chloro and a-bromo acids and it is sometimes awkward to carry out. The reagents ( X_(2) and P) are noxious and the reaction time is often long and the conditions of reaction are harsh. CH_(3)CH_(2)COOHoverset(Red P +Br_(2))to(A)overset(alc. KOH)(B) . The product (B) is :

Which of the following undergoes Hell - Volhard - Zelinsky reaction ?

The product formed during the Kolbe's reaction is

MHTCET PREVIOUS YEAR PAPERS AND PRACTICE PAPERS-ALDEHYDES, KETONES AND CARBOXYLIC ACIDS-EXERCISE 2
  1. Bezaldehyde gives a positive test with

    Text Solution

    |

  2. Acetaldehyde form a white crystalline precipitate mixing with a soluti...

    Text Solution

    |

  3. The product formed during Hell-Volhard-Zelinsky reaction is

    Text Solution

    |

  4. Which gives lactic acid on hydrolysis after reacting with HCN?

    Text Solution

    |

  5. Benzaldehyde condense with acetaldehyde to produce

    Text Solution

    |

  6. The correct order for the acidic strength of thhe following compounds ...

    Text Solution

    |

  7. The reagent which does not give acid chloride on treating with a carbo...

    Text Solution

    |

  8. Among the following , the most acicid is

    Text Solution

    |

  9. Among the following, which compound is most acidic ?

    Text Solution

    |

  10. Colouration of Br(2)//C Cl(4) will be discharged by

    Text Solution

    |

  11. Which of the following product is fomred in the reaction CH(3)MgBr ...

    Text Solution

    |

  12. Cinnamci acid is fomed when C(6)H(5)-CHO condenses with (CH(3)CO(2))O ...

    Text Solution

    |

  13. Which of the reagents (s) is/are responsible for the conversion of tol...

    Text Solution

    |

  14. The most suitable reagent A, for the reaction is/are

    Text Solution

    |

  15. Name the product formed during the decarboxylation of malonic acid.

    Text Solution

    |

  16. The refluxing of (CH3)2NCOCH3 with acid gives

    Text Solution

    |

  17. Match the reactions given in Column I with the suitable reagents given...

    Text Solution

    |

  18. Which of the following will be most readily dehydrate under acidic con...

    Text Solution

    |

  19. At room temperature, formaldehyde changed to

    Text Solution

    |

  20. Amide on heating with P(2)O(5) gives

    Text Solution

    |