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p-Hydroxybenzaldehyde does not undergo C...

p-Hydroxybenzaldehyde does not undergo Cannizzaro reaction. Explain.

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More the positive charge on the C atom of (CHO) group, nucleophile `overset(o+)(OH)` will attack faster and C.R. will take place. But due to the reasonance effect by the ED power of OH group, positive charge on the C atom of CHO group is neturalised and hence C.R. does not take place.
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Benzaldehyde cannot undergo Cannizzaro reaction.

In Cannizzaro reaction-

Cannizzaro's reaction is

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