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In which of the following reaction aroma...

In which of the following reaction aromatic aldehyde is treated with acid anhydride in presence of corresponding salt of the acid to give unsaturated aromatic acid

A

Friedel-Craft's reaction

B

perkin reaction

C

wurtz reaction

D

Reformatsky reaction

Text Solution

Verified by Experts

The correct Answer is:
B
Perkins condensation uses anhydrides on aldehydes to make a.,`hata`-unsaturated acids.
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NARAYNA-ALDEHYDES, KETONES & CARBOXYLIC ACIDS-EXERCISE -III
  1. Predict the product 'B' in the sequence of reaction HC equiv CH overse...

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  2. In which of the following reaction aromatic aldehyde is treated with a...

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  3. Which of the following is incorrect

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  4. The oxidation of toluene to benzaldehyde by chromyl chloride is called

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  5. In the following reaction, product P is R - overset(O)overset(||)(C ...

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  6. The reaction of an aldehyde with hydroxylamine gives a product which i...

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  7. Identify the wrong statement from the following

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  8. The reaction CH(3) CH = CH(2) underset(H^(+))overset(CO + H(2)O)(rar...

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  9. By oxidation with V(2) O(5), which one of the following gives phthalic...

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  10. underset((ii) H(2)O)overset((i) CO(2))(rarr) In the reaction, product...

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  11. Which of the following acids has the smallest dissociation constant

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  12. CH(3)CH(2)COOH overset("Red P/HI")rarr is overset("alc. KOH")rarr "Pro...

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  13. Acetophenone is prepared from :

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  14. Glycerol reacts with potassium bisulphate to produce

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  15. Identify the reactant X and the product Y CH(3) - CO - CH(3) + X rar...

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  16. When m-chlorobenzaldehyde is treated with 50% KOH solution, the produc...

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  17. A and B in the following reaction are R - C - R' overset("HCN/KCN"...

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  18. Which gives lactic acid on hydrolysis after reacting with HCN in KCN ...

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  19. A underset(800^(@)C )overset(Delta)(rarr) CH(2) = C = O , Reactant ' A...

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  20. Laboratory method for the preparation of acetyl chloride is :

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