QuestionOrganic / steric acceleration and α-sulfonyl effect
Consider the following statements about the reactivity of compounds I-IV : where OPNB is p-nitrobenzoate
- Compound I undergoes solvolysis in aqueous acetone slower than II
- Compound I undergoes solvolysis in aqueous acetone faster than II
- Compound III reacts with KI slower than IV
- Compound III reacts with KI faster than IV

Which of the statements given above are correct ?
- (a) 1 and 3
- (b) 1 and 4
- (c) 2 and 3
- (d) 2 and 4
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