1.

Explain the mechanism of Cannizaro reaction.

Answer»

Solution :Cannizaro REACTION INVOLVES three steps.
Step 1 : Attack of OH - on the carbonyl carbons.

Step 2 : Hydride ion transfer

Step 3 : Acid - base reaction.
`C_(6)H_(5)-overset(O)overset(||)(C)-OH+C_(6)H_(5)CH_(2)O^(-)+Na^(+)underset("EXCHANGE")overset("Proton")tounderset("Sodium benzoate")(C_(6)H_(5)-overset(O)overset(||)(C)-ONa)+underset("Benzyl alcohol")(C_(6)H_(5)CH_(2)OH)`
Cannizaro reaction is a CHARACTERISTIC of aldehyde having no `alpha`-hydrogen.


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