Q3 / 75 · JEE Main 2020 (03 Sep Shift 2) · Chemistry

The increasing order of the reactivity of the following compounds in nucleophile addition reaction is:

Propanal, Benzaldehyde, Propanone, Butanone

  • A
    Benzaldehyde > Butanone < Propanone < Propanal
  • Correct answer
    B
    Butanone < Propanone < Benzaldehyde < Propanal
  • C
    Propanal < Propanone < Butanone < Benzaldehyde
  • D
    Benzaldehyde < Propanal < Propanone < Butanone

Solution

Rate of NAR α -I,-M group attache to carbonyl carbonMoreover aldehydes are more reactive than ketones.

Figure 

Hence, the correct answer is option: 'B'.

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