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• W2143670386 endingPage "2502" @default.
• W2143670386 startingPage "2496" @default.
• W2143670386 abstract "Abstract We report here the intramolecular reactions between α,β‐epoxy ketones and alkynes cocatalyzed by gold(I) and Yb(OTf) 3 . This new catalytic system based on a combination of gold(I) and Yb(OTf) 3 allows facile transformation of epoxy alkynes to give novel indene derivatives in moderate to good yields under mild conditions. Moreover, we describe here the first observation of a transfer of a carbonyl group in a five‐membered carbocycle during gold‐catalyzed reactions. This proposed mechanism is corroborated by isotope‐labeling experiments (D and 13 C). Furthermore, the probable role of each catalyst in this interesting domino reaction has been examined by 31 P NMR experiments. The utilization of gold catalysts combined with rare‐earth metal salts offers a new concept for the design of catalyst combinations for domino or cascade reactions." @default.
• W2143670386 created "2016-06-24" @default.
• W2143670386 creator A5080847034 @default.
• W2143670386 creator A5086152877 @default.
• W2143670386 date "2010-02-15" @default.
• W2143670386 modified "2023-10-18" @default.
• W2143670386 title "Gold(I)- and Yb(OTf)₃-Cocatalyzed Rearrangements of Epoxy Alkynes: Transfer of a Carbonyl Group in a Five-Membered Carbocycle" @default.
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• W2143670386 doi "https://doi.org/10.1002/chem.200902321" @default.
• W2143670386 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/20077534" @default.

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