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Out of benzaldehyde and propionaldehyde,...

Out of benzaldehyde and propionaldehyde, which is mre reactive towards nucelophilic addition?

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Propionadehyde is more reactive than benzaldehyde towards nucleophilic addition. Actually, in benzaldehyde the aldehyic group has -M (mesomeric) effect. As a result the electron density on the carbonyl carbon atom tends to increase and the nucleophile attack is more difficult as compared to propionaldehyde where alkyl group is attached to the aldehydic group. for more details, consult section 8.
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DINESH PUBLICATION-ALDEHYDES AND KETONES -Additional Important Question
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  2. Sodium bisulphite is used to purify aldehydes and ketones. Explain.

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  3. Out of benzaldehyde and propionaldehyde, which is mre reactive towards...

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  7. Why does not formaldehyde take part in aldol condensation?

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  8. Why is it necessary to control the pH during the reaction of aldehydes...

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  9. Benzophenone does not react with NaHSO(3). Explain.

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  10. Why does formaldehyde undergo Cannizzaro's reaction while acetaldehyde...

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  11. How wil you convert an alkene into an aldehyde containing one carboon ...

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  12. Outline the synthesis of PhCH(2)CH(2)CHO from benzene, ethylene oxide ...

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  13. How will you bring about the following changes :

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  14. Arrange the following in the order of their incresing reactivity towar...

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  15. Arrange the following compounds in order of increasing reactivity towa...

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  16. Name two reagents which can be used to convert gtC = O to gt CH(2) gro...

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  19. Why a benzaldehyde less reactive than acetaldehyde towards nucleophili...

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