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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

Verified by Experts

The correct Answer is:
A
`R-oversetoversetO(||)C-NH_2+Br_2 to R - oversetoverset(O)(||)C-ddotN-HBr underset(-H^+)to R-oversetoverset(O)(||)C-underset(ddot)ddotN-Br to R- ddotN = C =O overset(KOH//H_2O)to RNH_2+ CO_2`
The above reaction is known as Hofmann bromamide reaction.
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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-ORGANIC COMPOUNDS CONTAINING NITROGEN -EXERCISE 2 (MISCELLANEOUS PROBLEMS )
  1. An organic compound (C3H9N) (A) when treated with nitrous acid , gave ...

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  2. In the reaction,

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

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  4. Compound A (C(3)H(9)N) reacts with benzene sulphonyl chloride to form ...

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  5. Match the reactant in Column I with the reaction in Column II

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  6. Consider the following reaction The compound B is

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  7. Which of the following amides will not undergo Hofmann bromamide react...

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  8. Which of the following is the strongest base:

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  9. Aniline when diazotiesd in cold and then treated with dimethy1 aniline...

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  10. Which compound exhibits maximum dipole moment among the following ?

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  11. Aniline is treated wi.th bromine water to give an organic compound X w...

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  12. Which of the following compounds does liberate CO2 from NaHCO3?

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  13. Nitrobenzene can be prepared from benzene by using a mixture of cone. ...

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  14. Match the amines given in Column I with their classification in the Co...

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  15. In the given reaction, NH3+RX to underset((1^@))(R NH2)+RX to underset...

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  16. Arrange the following compounds in increasing order of their acidic st...

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  17. Which of the following reaction/statement is incorrect?

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  18. In the following reaction, What is X and Y in the above reaction?

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  19. The correct reaction for Hofmann mustard oil reaction is

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  20. Identify A and Bin the following reaction.

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