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Claisen condensation involves :...

Claisen condensation involves :

A

two molecules of ketone

B

two molecules of esters having no `alpha`-hydrogen

C

two molecules of esters having `alpha`-hydrogen atoms

D

one molecule of ester having`alpha`-hydrogen and one molecule of ester having no `alpha`-hydrogen

Text Solution

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The correct Answer is:
C
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Assertion: Esters which contain alpha- hydrogens undergo Claisen condensation. Reason : LiAIH_(4) reduction of esters gives acids

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OP TANDON-CARBOXYLIC ACIDS AND THEIR DERIVATIVES-Objective questions
  1. In the given reaction, the product [X] will be :

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  2. In the reaction, [A] and [B] respectively be :

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  3. Claisen condensation involves :

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  4. Which one of the following esters cannot undergo self Claisen condensa...

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  5. Match the list, I with List II and select the correct answer using the...

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  6. The following sequence of reactions on A gives

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  7. The compound is used as

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  8. The correct decreasing order of their reactivity towards hydrolysis is

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  9. Acetoacetic ester is used for the synthesis of:

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  10. Starting from diethyl malonate, what type of acids can prepared from i...

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  11. Acetic anhydride may be prepared by the reaction of acetic acid with:

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  12. Acetic anhydride is prepared industrially by heating sodium acetate wi...

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  13. Acetyl chloride is prepared industrially by distilling sodium acetate ...

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  14. Urea on heating with ethyl alcohol gives:

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  15. Urea may be identified by which of the following tests?

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  16. (A)overset(PCl(5))toRCOCl, (A)may be :

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  17. Reaction of R-overset(O)overset(||) C-NH2 with a mixture of Br2 and KO...

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  18. Urea is prepared in the laboratory by the action of NH(3) on

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  19. The product formed are :

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  20. Identify [X] and [Y] in the following reaction :

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