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INTRAMOLECULAR CANNIZARO REACTION:


Alpha (α)-keto aldehydes can be converted to α-hydroxy carboxylic acids by an intermolecular Cannizzaro reaction.
Illustrative Example: Phenylglyoxal undergoes intramolecular cannizzaro reaction by giving Mandelic acid (α-hydroxyphenylacetic acid or 2-Hydroxy-2-phenylethanoic acid)
Illustrative Example: Phthalaldehyde can undergo intramolecular Cannizzaro reaction by giving (o-hydroxymethyl) benzoic acid.

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