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Question
Least reactive towards nucleophilic addition among the following is
Least reactive towards nucleophilic addition among the following is
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Solution
The correct option is C
Aldehydes are more reactive than ketones towards nucleophiles due to following reason:.
1. Aldehydes tend to me more reactive to nucleophilic addition than ketones due to steric hinderance. Ketones have two alkyl groups attached to their carbonyl carbon while aldehydes only have one. This means nucleophiles have a less sterically hindered path when attacking the carbonyl carbon of an aldehyde.
2. Two alkyl groups in ketones reduce the electrophilicity of the carbonyl carbon more effectively than in aldehyde.
Hence Aldehydes are more reactive toward nucleophilic addition reactions than Ketones.
As the number and the size of the alkyl group increases, reactivity decreases.
In compound (b), electronegative group will increase the electropositive character of carbonyl carbon so it is reactive compared to (c)
Thus, compound (c) is least reactive.
Aldehydes are more reactive than ketones towards nucleophiles due to following reason:.
1. Aldehydes tend to me more reactive to nucleophilic addition than ketones due to steric hinderance. Ketones have two alkyl groups attached to their carbonyl carbon while aldehydes only have one. This means nucleophiles have a less sterically hindered path when attacking the carbonyl carbon of an aldehyde.
2. Two alkyl groups in ketones reduce the electrophilicity of the carbonyl carbon more effectively than in aldehyde.
Hence Aldehydes are more reactive toward nucleophilic addition reactions than Ketones.
As the number and the size of the alkyl group increases, reactivity decreases.
In compound (b), electronegative group will increase the electropositive character of carbonyl carbon so it is reactive compared to (c)
Thus, compound (c) is least reactive.
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