Efficient cycloisomerization of propargyl amides by electrophilic gold(I) complexes of KITPHOS monophosphines: a comparative study
Electrophilic gold(I) complexes of diphenyl- and dicyclohexylphosphino-based KITPHOS monophosphines catalyze the 5-exo-dig cycloisomerization of a range of propargyl amides to afford the corresponding alkylidene oxazolines; in all cases catalysts formed from diphenylphosphino-substituted KITPHOS mon...
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| Hauptverfasser: | , , , , , , , , |
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| Dokumenttyp: | Article (Journal) |
| Sprache: | Englisch |
| Veröffentlicht: |
August 17, 2010
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| In: |
Organometallics
Year: 2010, Jahrgang: 29, Heft: 18, Pages: 4139-4147 |
| ISSN: | 1520-6041 |
| DOI: | 10.1021/om1006769 |
| Online-Zugang: | Verlag, lizenzpflichtig, Volltext: https://doi.org/10.1021/om1006769
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| Verfasserangaben: | Simon Doherty, Julian G. Knight, A. Stephen K. Hashmi, Catherine H. Smyth, Nicholas A.B. Ward, Katharine J. Robson, Sophie Tweedley, Ross W. Harrington, and William Clegg |
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| 520 | |a Electrophilic gold(I) complexes of diphenyl- and dicyclohexylphosphino-based KITPHOS monophosphines catalyze the 5-exo-dig cycloisomerization of a range of propargyl amides to afford the corresponding alkylidene oxazolines; in all cases catalysts formed from diphenylphosphino-substituted KITPHOS monophosphines outperformed their dicyclohexylphosphino counterparts as well as that based on triphenylphosphine, an indication that the biaryl/biaryl-like framework may be responsible for imparting high catalyst efficiency. | ||
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