Question

The increasing order of the reactivity of the following compounds in nucleophilic addition reaction is: Propanal, Benzaldehyde, Propanone, Butanone

• A. Benzaldehyde < Propanal < Propanone < Butanone
• B. Propanal < Propanone < Butanone < Benzaldehyde
• C. Butanone < Propanone < Benzaldehyde < Propanal
• D. Benzaldehyde < Butanone < Propanone < Propanal

Answer 1

The correct option is C

Butanone < Propanone < Benzaldehyde < Propanal

The correct answer is (c):

The Explanation of the correct options:

(c)

• When a nucleophile forms a sigma bond with an electron-deficient species, a nucleophilic addition reaction occurs. These reactions are crucial in organic chemistry because they allow carboxyl groups to be converted into a wide range of functional groups.
• A nucleophilic substitution reaction occurs when a nucleophile forms a sigma relationship with an electron-deficient species.
• The order of the alkyl group's +I impact gets higher. Ethanal < Propanal < Propanone < Butanone.
• With a rise in the +I effect, the electron density at the carbonyl carbon rises.
• As a result, there are fewer odds of a nucleophile attack.
• Butanone is less reactive than Propanone, and Propanone is less reactive than Benzaldehyde. Benzaldehyde has a lower potency than is.

The correct answer is (c). Because propanol has a more polar carbonyl group than benzaldehyde.