Intramolecular anti-phosphinoauration of alkynes: an FLP-motivated approach to stable aurated phosphindolium complexes
The synthesis of aurated phosphindolium complexes from easy accessible 1,5-alkynylphosphine derivatives has been studied by using gold(I) complexes featuring carbene and phosphine ligands as initiators. Upon formation of the mixed phosphine NHC/phosphine gold species, elevated temperatures induced t...
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| Main Authors: | , , , , |
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| Format: | Article (Journal) |
| Language: | English |
| Published: |
3 February 2017
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| In: |
Chemistry - a European journal
Year: 2017, Volume: 23, Issue: 11, Pages: 2542-2547 |
| ISSN: | 1521-3765 |
| DOI: | 10.1002/chem.201605914 |
| Online Access: | Verlag, Volltext: http://dx.doi.org/10.1002/chem.201605914 Verlag, Volltext: http://onlinelibrary.wiley.com/doi/10.1002/chem.201605914/abstract 
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| Author Notes: | Sebastian Arndt, Max M. Hansmann, Petr Motloch, Matthias Rudolph, Frank Rominger, and A. Stephen K. Hashmi |
| Summary: | The synthesis of aurated phosphindolium complexes from easy accessible 1,5-alkynylphosphine derivatives has been studied by using gold(I) complexes featuring carbene and phosphine ligands as initiators. Upon formation of the mixed phosphine NHC/phosphine gold species, elevated temperatures induced the cyclization to give stable aurated phosphindolium salts, which is supported by DFT calculations. The key elementary step that comprises a yet unknown anti-phosphinoauration of an unactivated alkyne is favored if bulky NHC ligands are used which was analyzed by kinetic measurements. This concept could furthermore be extended to neutral (phosphindolium)AuCl complexes featuring the yet unknown phosphindole ligand. |
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| Item Description: | Gesehen am 22.08.2017 |
| Physical Description: | Online Resource |
| ISSN: | 1521-3765 |
| DOI: | 10.1002/chem.201605914 |