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In the presence of a small amount of pho...

In the presence of a small amount of phosphorous, aliphatic carboxylic acids react with chlorine or bromine to yield a compound in which `alpha`- hydrogen has been replaced by halogen. This reaction is known as :

A

Etard reaction

B

Hell-Volhard-Zelinsky reaction

C

Wolff-Kischner reaction

D

Rosenmund reaction

Text Solution

Verified by Experts

The correct Answer is:
B
`CH_(3)-underset(O)underset(||)C-OHoverset(Red P+Cl_(2))rarrCl-CH_(2)-underset(O)underset(||)C-OH`
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ALLEN-ALKENE, ALKANE & ALKYNE -EXERCISE-5[A]
  1. The optically inactive compound from the following is :-

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  2. overset("Electrolysis")rarrA A is :-

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  3. In the presence of a small amount of phosphorous, aliphatic carboxylic...

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  4. Determination of the molar mass of acetic acid in benzene using freezi...

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  5. In the following sequence of reactions : "Toluene" overset(KMnO(2))r...

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  6. Reaction - Primary amine +CHCl(3)+KOHrarr product, here product will...

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  7. The compound formed in the positive test for nitrogen with Lassaigne's...

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  8. Which one of the following methods is neither meant for the synthesis ...

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  9. In the chemical reaction CH(3)CH(2)NH(2) + CHCI(3) + 3KOH rarr (A) +...

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  10. In the chemical reactions the compounds (A) and (B) are .

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  11. In the chemical reactions the compounds (A) and (B) are .

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  12. Compound (A) C(8)H(9)Br. Gives a white precipitate when warmed with al...

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

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  14. On heating an aliphatic primary amine with chloroform and enthanolic p...

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  15. Considering the basic strength of amines in aqueous sloution which one...

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  16. Arrange the following amines in the order of increasing basicity :-

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  17. Which compound exhibits maximum dipole moment among the following:-

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  18. In the reaction the product E is :-

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  19. In the hofmann-bromamide degradation reaction, the number of moles of ...

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  20. How will you distinguish between primary, secondary and tertiary alcoh...

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