Home
Class 12
CHEMISTRY
RCONH(2)+4NaOH+Br(2) to RNH(2) + 2NaBr+N...

`RCONH_(2)+4NaOH+Br_(2) to RNH_(2) + 2NaBr+Na_(2)CO_(3)+2H_(2)O` Reaction is said

A

Hofmann bromamide reaction

B

Schmidt reaction

C

Curtius reaction

D

Beckmann reaction

Text Solution

AI Generated Solution

The correct Answer is:
To determine the name of the reaction given by the equation: \[ \text{RCONH}_2 + 4\text{NaOH} + \text{Br}_2 \rightarrow \text{RNH}_2 + 2\text{NaBr} + \text{Na}_2\text{CO}_3 + 2\text{H}_2\text{O} \] we will analyze the components and the nature of the reaction step by step. ### Step 1: Identify the Reactants The reactants in the equation are: - RCONH₂ (a primary amide) - 4 NaOH (sodium hydroxide) - Br₂ (bromine) ### Step 2: Analyze the Reaction Conditions The reaction involves a primary amide reacting with sodium hydroxide and bromine. The presence of sodium hydroxide suggests that the reaction is likely to involve a hydrolysis step, while bromine indicates a halogenation process. ### Step 3: Identify the Products The products of the reaction are: - RNH₂ (a primary amine) - 2 NaBr (sodium bromide) - Na₂CO₃ (sodium carbonate) - 2 H₂O (water) ### Step 4: Recognize the Type of Reaction This reaction is characteristic of the **Hofmann degradation** (or Hofmann bromamide reaction). In this reaction, a primary amide is converted into a primary amine with the loss of one carbon atom. The reaction also produces sodium bromide and sodium carbonate as by-products. ### Step 5: Conclusion Based on the analysis, the reaction can be classified as the **Hofmann Bromamide Reaction**. ### Final Answer The reaction is called the **Hofmann Bromamide Reaction**. ---

To determine the name of the reaction given by the equation: \[ \text{RCONH}_2 + 4\text{NaOH} + \text{Br}_2 \rightarrow \text{RNH}_2 + 2\text{NaBr} + \text{Na}_2\text{CO}_3 + 2\text{H}_2\text{O} \] we will analyze the components and the nature of the reaction step by step. ### Step 1: Identify the Reactants The reactants in the equation are: ...
Promotional Banner

Topper's Solved these Questions

  • PRACTICE SET 11

    MHTCET PREVIOUS YEAR PAPERS AND PRACTICE PAPERS|Exercise PAPER 1 (CHEMISTRY)|50 Videos
  • PRACTICE SET 13

    MHTCET PREVIOUS YEAR PAPERS AND PRACTICE PAPERS|Exercise PAPER I OBJECTIVE TYPE|50 Videos

Similar Questions

Explore conceptually related problems

Na_(2)SO_(3)+H_(2)O_(2) rarr Na_(2)SO_(4) +H_(2)O , in reaction

Amides with no substitution on nitrogen react with tht: solution of bromine or chlorine in NaOH or KOH to yield aminei through a reaction called as Hofmann's degradation. R-overset(O)overset(||)(C )-NH_(2)+Br_(2)+4NaOH overset(H_(2)O)rarr R-NH_(2)+2NaBr+Na_(2)CO_(3)+2H_(2)O Amides can be reduced to amines having same number of carbon atoms R-overset(O)overset(||)C-NH_(2)-underset(LiAlH_(4))overset([H])toR-CH_(2)-NH_(2) Iso-cyanates are formed as intermediate in the Hofmann's degradation.

Amides with no substitution on nitrogen react with tht: solution of bromine or chlorine in NaOH or KOH to yield aminei through a reaction called as Hofmann's degradation. R-overset(O)overset(||)(C )-NH_(2)+Br_(2)+4NaOH overset(H_(2)O)rarr R-NH_(2)+2NaBr+Na_(2)CO_(3)+2H_(2)O Amides can be reduced to amines having same number of carbon atoms R-overset(O)overset(||)C-NH_(2)-underset(LiAlH_(4))overset([H])toR-CH_(2)-NH_(2) N-Methyl aniline can be obtained by using Hofmann's degradation.

Amides with no substitution on nitrogen react with tht: solution of bromine or chlorine in NaOH or KOH to yield aminei through a reaction called as Hofmann's degradation. R-overset(O)overset(||)(C )-NH_(2)+Br_(2)+4NaOH overset(H_(2)O)rarr R-NH_(2)+2NaBr+Na_(2)CO_(3)+2H_(2)O Amides can be reduced to amines having same number of carbon atoms R-overset(O)overset(||)C-NH_(2)-underset(LiAlH_(4))overset([H])toR-CH_(2)-NH_(2) will undergo Hofmann's degradation.

2NaOH+Zn(OH)_(2) darr to Na_(2)ZnO_(2)+2H_(2)O

MHTCET PREVIOUS YEAR PAPERS AND PRACTICE PAPERS-PRACTICE SET 12-Paper 1 (Physics & Chemistry)
  1. Which of the following does not show S(N)2 reaction?

    Text Solution

    |

  2. In the adsorption of oxalic acid on activated charcoal, the activated ...

    Text Solution

    |

  3. RCONH(2)+4NaOH+Br(2) to RNH(2) + 2NaBr+Na(2)CO(3)+2H(2)O Reaction is s...

    Text Solution

    |

  4. The boiling point of ethanol is higher than that of dimethyl ether

    Text Solution

    |

  5. Consider the following sequence of reactions and identify the final pr...

    Text Solution

    |

  6. Solubility of enthylamine in water is due to

    Text Solution

    |

  7. When aqueous solution of benzene diazonium chloride is boiled, the pro...

    Text Solution

    |

  8. Glucose overset("Zymase")(to)A+ carbon dioxide. A when subjected to vi...

    Text Solution

    |

  9. Example of addition copolymer ils

    Text Solution

    |

  10. Neutralisation products of higher monocarboxylic acids with NaOH are

    Text Solution

    |

  11. On heating NaX with H(2)SO(4) and MnO(2) the halogen that cannot be pr...

    Text Solution

    |

  12. The order of reactivities of methyl halide in the formation of Grignar...

    Text Solution

    |

  13. Amongst the following, the lowest degree of paramgnetism per mole of t...

    Text Solution

    |

  14. The correct order of relative acidic strength of the following compouo...

    Text Solution

    |

  15. Most volatile compound is

    Text Solution

    |

  16. RNH(2)+CHCl(3)+3KOH(alc.) to A+3KCL+3H(2)O form the product A'.RNH(2) ...

    Text Solution

    |

  17. The number of possible isomers of an octahedral complex [Co(C(2)O(4))(...

    Text Solution

    |

  18. A copolymer of vinyl chloride and acrylonitrile are used in the manufa...

    Text Solution

    |

  19. Chemical preservatives

    Text Solution

    |

  20. The physical states of dispersing phase and dispersion medium in collo...

    Text Solution

    |