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The most reactive compound towards forma...

The most reactive compound towards formation of cyanohydrin on treatment with KCN followed by acidification is

A

benaldehyde

B

p-nitrobenzaldehyde

C

phenylacetaldehyde

D

p-hydroxybenzaldehyde

Text Solution

Verified by Experts

The correct Answer is:
B
Addition of HCN to a carbonyl compound is a nucleophilic additon reaction. `NO_(2)` group being electron withdrawing increases the polarity (or electron deficiency) of carbonyl and thus. Makes the group of benzaldehyde more reactive towards HCN
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MHTCET PREVIOUS YEAR PAPERS AND PRACTICE PAPERS-ALDEHYDES, KETONES AND CARBOXYLIC ACIDS-EXERCISE 2
  1. Which reactio is used for the preparation of acetophenone ?

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  2. The most reactive compound towards formation of cyanohydrin on treatme...

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  3. Identify the reaction which is used to obtian beta- hydroxy ketone ?

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  4. Which of the following compounds would be the main product of an aldo...

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  5. An organic compound of molecular formula C(3)H(5)O did not give a silv...

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  6. The product formed in the aldol condensation of acetaldehyde is

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  7. Acetone on addition to methyl magnesium bromide froms a complex, which...

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  8. Which of the following is an example of aldol condensation?

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  9. The product fomred in the reaction

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  10. An organic compound X gives a red precipitate on heating with Fehling...

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  11. which of the following converts carbonyl compounds into hydrocarbons ?

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  12. The end prduct in the Cannizaro's reaction of benzaldehyde is

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  13. How will you convert butan -2-one to propanoic acid?

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  14. The acetophenone can be converted to eehtylbezene by reaction with LiA...

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  15. Arrange the following compounds in the increasing order of their boili...

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  16. The conversion of acetophenone to acetanilide is best accompanied by u...

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  17. Bezaldehyde gives a positive test with

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  18. Acetaldehyde form a white crystalline precipitate mixing with a soluti...

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  19. The product formed during Hell-Volhard-Zelinsky reaction is

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  20. Which gives lactic acid on hydrolysis after reacting with HCN?

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