JEE Main20202 Sep 2020Morning ShiftChemistryGeneral Organic ChemistryActual
The increasing order of the following compounds towards HCN addition is : (i) (ii) (iii) (iv)
Options
- A(i) < (iii) < (iv) < (ii)
- B(iii) < (iv) < (i) < (ii)
- C(iii) < (i) < (iv) < (ii)
- D(iii) < (iv) < (ii) < (i)
Correct answer
C. (iii) < (i) < (iv) < (ii)
Step-by-step solution
– I ,   –   M effect of NO 2 increase reactivity towards nucleophilic addition reaction with HCN . Nucleophile attacks on carbon atom of carbonyl group which will be more reactive if any wlectron withdrawing group is attached in ring.