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Prof. Dr. Vincent Lavallo, James H. Wright II, Dr. Fook S. Tham and Sean Quinlivan Perhalogenated Carba-closo-dodecaborate Anions as Ligand Substituents: Applications in Gold Catalysis Angewandte Chemie International Edition 52

Article first published online: 13 FEB 2013 | DOI: 10.1002/anie.201209107

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Bigger and better! The single-component zwitterionic gold catalyst formed by the coordination of a phosphine ligand bearing an inert and noncoordinating carborane substituent, CB11Cl11, to an AuI ion exhibited the highest reported activity for the hydroamination of alkynes with amines (see scheme). The highest turnover number observed for hydroamination with this catalyst exceeded a stunning 95 000.

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