1.

The order of susceptibility of nucleophilic attack on aldehydes follows the order

Answer»

`1^(@) gt 3^(@) gt 2^(@)`
`1^(@) gt 2^(@) gt 3^(@)`
`3^(@) gt 2^(@) gt 1^(@)`
`2^(@) gt 3^(@) gt 1^(@)`

Solution :`R-overset(+delta)underset(O)underset(||)(C )-H,` Susceptibility of nucleophilic attack on ALDEHYDE is decreased by elecron releasing effect of R GROUP. Decreasing order of aldehyde TOWARDS nucleophilic attack is `1^(@) gt 2^(@) gt 3^(@) R` group.


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