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À propos de : Rhodium Complex-Catalyzed Pauson−Khand-Type Reaction withAldehydes as a CO Source        

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  • Rhodium Complex-Catalyzed Pauson−Khand-Type Reaction withAldehydes as a CO Source
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  • With aldehydes as a CO source under solvent-free conditions, rhodium complex efficiently catalyzedan intramolecular carbonylative alkene−alkyne coupling (Pauson−Khand-type reaction) and variousbicyclic enones were obtained in high yield. Experiments under argon flow and a 13C-labelingexperiment suggested that almost no free carbon monoxide was generated in this reaction. Whennoncationic rhodium complex with chiral phosphine was used as a chiral catalyst, the reactionproceeded enantioselectively to give various chiral cyclopentenones in up to 90% ee under solvent-free conditions.
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