JEE Main202622 January 2026Morning ShiftChemistryHaloalkanes and HaloarenesActual
The correct order of the rate of reaction of the following reactants with nucleophile by SN1 mechanism is: (Given : Structure I and II are rigid)
Options
- AIII < I < II < IV
- BIV < III < II < I
- CI < II < III < IV
- DII < I < III < IV
Correct answer
D. II < I < III < IV
Step-by-step solution
Rate of S_N1 Stability of C^ formed (I) and (II) are unstable due to Bredt's rule, (I) has more +I effect. (II) < (I) < (III) < (IV)