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Reactivity of organogold compounds with B(C6F5)3: gold-boron transmetalation via [sigma]-B/[pi]-Au species

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The reactions of gold-acetylides with B(C6F5)3 afford alkynyl borate species and cationic π-coordinated gold complexes. The analogous reactions with aryl gold species generate gem-diaurated compounds containing a borate counteranion. These new σ-B/π-Au alkynyl borate complexes can be employed as act...

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Bibliographic Details
Main Authors: Hansmann, Max M. (Author) , Rominger, Frank (Author) , Boone, Michael P. (Author) , Stephan, Douglas W. (Author) , Hashmi, A. Stephen K. (Author)
Format: Article (Journal)
Language:English
Published: August 26, 2014
In: Organometallics
Year: 2014, Volume: 33, Issue: 17, Pages: 4461-4470
ISSN:1520-6041
DOI:10.1021/om5006885
Online Access:Verlag, lizenzpflichtig, Volltext: https://doi.org/10.1021/om5006885
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Author Notes:Max M. Hansmann, Frank Rominger, Michael P. Boone, Douglas W. Stephan, and A. Stephen K. Hashmi
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Summary:The reactions of gold-acetylides with B(C6F5)3 afford alkynyl borate species and cationic π-coordinated gold complexes. The analogous reactions with aryl gold species generate gem-diaurated compounds containing a borate counteranion. These new σ-B/π-Au alkynyl borate complexes can be employed as active catalysts in homogeneous catalysis and represent a new silver-free activation pathway. The new alkynyl borate species are fully characterized, and the alkyne fragments are shown to be bound in a σ-B/π-Au fashion. Upon prolonged heating, these compounds undergo a slow C6F5 group transfer to gold affording LAuC6F5 species.
Item Description:Die Ziffern im Titel sind tiefgestellt, sigma und pi sind als griechische Buchstaben dargestellt
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Physical Description:Online Resource
ISSN:1520-6041
DOI:10.1021/om5006885

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