期刊
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
卷 54, 期 5, 页码 1666-1670出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.201409859
关键词
CO extrusion; diynes; gold acyl; gold catalysis; gold vinylidenes
资金
- Fonds der Chemischen Industrie
- BASF SE
Herein, we describe a new gold-catalyzed decarbonylative indene synthesis. Synergistic sigma,pi-activation of diyne substrates leads to gold vinylidene intermediates, which upon addition of water are transformed into gold acyl species, a type of organogold compound hitherto only scarcely reported. The latter are shown to undergo extrusion of CO, an elementary step completely unknown for homogeneous gold catalysis. By tuning the electronic and steric properties of the starting diyne systems, this new reactivity could be exploited for the synthesis of indene derivatives in high yields.
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