Journal
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
Volume 57, Issue 17, Pages 4742-4746Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.201800670
Keywords
allenes; gold; heterocycles; heterogeneous catalysis; platinum
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Funding
- Leverhulme Trust [RPG-2015-143]
- University of East Anglia
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Heterobimetallic catalysis offers new opportunities for reactivity and selectivity but still presents challenges, and only a few metal combinations have been explored so far. Reported here is a Pt-Au heterobimetallic catalyst system for the synthesis of a family of multi-heteroaromatic structures through tandem cyclization/C-X coupling reaction. Au-catalyzed 6-endo-cyclization takes place as the first fast step. Pt-Au clusters are proposed to be responsible for the increased reactivity in the second step, that is, the intermolecular nucleophilic addition which occurs through an outer-sphere mechanism by hybrid homogeneous-heterogeneous catalysis.
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