DOI: 10.1055/s-00000083

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References

Wender and co-workers also reported a similar [RhCl(CO)]2-catalyzed ring-opening cocyclization of cyclopropenones with alkynes to give cyclopentadienones; however, the reaction of 1 with 11h gave 12h selectively without 12h′, see: Wender PA. Paxton TJ. Williams TJ.
J. Am. Chem. Soc. 2006;
128: 14814

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