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Gold-catalyzed carbene transfer to alkynes: Access to 2,4-disubstituted furans
Kramer, Soren,Skrydstrup, Troels
, p. 4681 - 4684 (2012/06/30)
Furans of gold: The first example of a gold-catalyzed intermolecular addition of carbon ylides to terminal alkynes is reported (see scheme; DCE=dichloroethane, Tf=trifluoromethanesulfonyl). Subsequent intramolecular trapping of the generated gold carbene completes a formal [3+2] cycloaddition, which represents a novel synthesis of 2,4-disubstituted furans. Copyright
