MgI2-catalyzed nucleophilic ring-opening reactions of donor–acceptor cyclopropanes with indoline-2-thiones as easy-to-handle sulfur nucleophiles were investigated. A series of functionalized γ-indolylthio butyric acid derivatives were synthesized in good to excellent yields under mild reaction conditions. Furthermore, the thioether functionalized ring-opening products could be transformed to sulfone and methionine analogues.

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PIDA mediated the oxidative acyloxylation/azirination, sulfonyloxylation/azirination of β-enamino esters were investigated. Series of functionalized acyloxy-2H-azirine and sulfonyloxy-2H-azirine derivatives were synthesized in moderate to good yields. This represents the first oxidative...

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