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Among the following which one does not a...

Among the following which one does not act as an intermediate in hofmann rearrangement

A

RNCO

B

`RCO overset(..)(N)`

C

`RCO overset(..)(N) HBr`

D

RNC

Text Solution

Verified by Experts

The correct Answer is:
D
(i)`R overset(overset(O)(||))(C )NH_(2) + Br_(2) + KOH rarr RCONHBr + KBr + H_(2)O`
(ii) `RCONHBr + KOH rarr RNCO + KBr + H_(2)O`
(iii) `RNCO + 2KOH rarr RNH_(2) + K_(2)CO_(3)`
`ul(RCONH_(2) + Br_(2) + 4KOH rarr RNH_(2) + 2KBr + K_(2)CO_(3) + 2H_(2)O)`
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ERRORLESS-ORGANIC COMPOUNDS CONTAINING NITROGEN-Past Years Questions
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  2. Nitroso amines (R2N-N=0) are soluble in water on heating them with con...

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  3. Among the following which one does not act as an intermediate in hofma...

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  4. An orgainc compound A upon reacting with NH(3) gives B On heating B gi...

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  5. Which one of the following nitro-compounds does not react with nitrous...

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  6. Identify the product 'Z' in the following sequence of reactions. CH(...

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  7. In the reaction CH(3)CN+2H underset("Ether")overset(HCl)(rarr) X ove...

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  8. CH(3)CH(2)C-=Noverset(X)rarrCH(3)CH(2)CHO the compound X is :

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  9. When primary amine is heated with CS2 in presence of excess mercuric c...

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  10. The product formed by the reaction of an aldehyde with a primary amine...

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  11. Predict the product

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  12. Which of the following chemicals are used to manufacture methy1 isocya...

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  13. An organic compound A(C(3)H(9)N) when treated with ntrous acid gave an...

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  14. Name of some compounds are given. Which one is not correct IUPAC name.

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  15. Identify A and predict the type of reaction

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  16. The correct order of the basic strength of methyl substituted amines i...

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  17. Electrolytic reduction of nitrobenzene in weakly acidic medium gives .

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  18. The rate determining step for the preparation of nitrobenzene from ben...

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  19. The mojor product (70% to 80%) of the reaction between m-dinitrobenzen...

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  20. The electrolytic reduction of nitrobenzene in strongly acidic medium p...

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