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Organic letters

Pd-catalyzed intramolecular oxyalkynylation of alkenes with hypervalent iodine.


PMID 20000487

Abstract

The first example of intramolecular oxyalkynylation of nonactivated alkenes using oxidative Pd chemistry is reported. Both phenol and aromatic or aliphatic acid derivatives could be used under operator-friendly conditions (room temperature, technical solvents, under air). The discovery of the superiority of benziodoxolone-derived hypervalent iodine reagent 3d as an alkyne transfer reagent further expands the rapidly increasing utility of hypervalent iodine reagents in catalysis and is expected to have important implications for other similar processes.

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728365
1-[(Triisopropylsilyl)ethynyl]-1,2-benziodoxol-3(1H)-one, ≥98.0% (AT)
C18H25IO2Si