Question

In cross cannizzaro reaction 2 different aldehyde having no alpha hydrogen atom explain???​

Answer 1

Explanation:

The Cannizaro reaction occurs when there is no other easy reaction pathway. Aldehydes WITH alpha hydrogens are very prone to enolisation and then aldol condensation. This is the usual pathway.

If there are no alpha hydrogens, there can be no enolate and thus no aldol. The only possibility is nucleophilic attack on the aldehyde carbonyl. In this situation the much less favourable hydride transfer can occur.

Answer 2

Explanation:

the classic example of reaction between formaldehyde ( HCHO) and benzylaldehyde (c6h6CHO)

where one is oxidized to carboxylic acid and other reduced to alcohol

now the question is which is oxidized and reduced in

this reaction we use alkali like NaOH

in which OH- acts as a nucleophile and attacts the most electrophilic carbon which is In this case HCHO ,it will be easier if you see the mechanism

here,