How good is HCN addition to aromatic conjugated aldehyde?

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SUMMARY

The reaction of hydrogen cyanide (HCN) with aromatic conjugated aldehydes, such as benzaldehyde (Ph-CHO), yields lower results compared to standard aldehydes but higher than ketones. The presence of the phenyl group in aromatic aldehydes donates electrons, reducing the electrophilicity of the carbonyl carbon. This electron donation leads to resonance effects that create greater steric repulsion, ultimately affecting the reaction yield. Therefore, the expected yield order is standard aldehyde > aromatic aldehyde > ketone.

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K.z_z
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Reaction of HCN with an aldehyde has higher yield than HCN with a ketone due to steric strain around the ketone. Then how about reaction yield of HCN with an aromatically conjugated aldehyde (like Ph-CHO) comparing with the previous two reactions?
What I think:
The yield be lower than just with regular aldehyde and higher than with ketone. Since the phenyl group is Electron donating, thus making the carbonyl carbon less Electrophilic. Tell me if I am right or wrong, thank you.
 
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According to me the yeild should be lower than ketones as in ketones only inductive effect operates but in benzaldehyde resonance occurs.resonance as an electron shift effect is stronger and generates more repulsion
 

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