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Question

Benzaldehyde can be obtained from benzal chloride. Write reactions for obtaining benzal chloride and then benzaldehyde from it.

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Solution

Obtaining benzal chloride from toluene
Controlled free radical chlorination of toluene (chlorine in the presence of ultraviolet light) produces benzal chloride.


Obtaining benzaldehyde from benzal chloride

When benzal chloride is heated with dilute NaOH, the formation of benzaldehyde takes place.



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