Projects per year
Abstract
Osmafuran complexes in the form of cis-[Os(L∧L)2(C∧O)]+ (L∧L = 1,1-bis(diphenylphosphino)methane (dppm) or 2,2'-bipyridine (bpy); C∧O = [C(CH3)C(CH3)CRO]-, coordinating atoms in italics) were prepared from reactions between dichloro-Os(II) complexes cis-[Os(L∧L)2Cl2] and allenols H2C=C=C(CH3)(CH(R)(OH)) in alcoholic solvents. Rearrangement of allenolates H2C=C=C(CH3)(CH(R)(O-)) involving deprotonation of the secondary alcoholic carbon and protonation of the terminal allenic carbon was evident from the X-ray crystal structures of the resulting complexes. Density functional theory (DFT) calculations suggested a rearrangement mechanism involving Os-alkene intermediates cis-[Os(L∧L)2(H2C=CH-C(CH3)(=C(R)(O-)))]+ but not Os-hydride intermediates. Overall, these osmafurans are not directly derived from common metal-allene reaction patterns.
| Original language | English |
|---|---|
| Pages (from-to) | 1931–1941 |
| Journal | Organometallics |
| Volume | 41 |
| Issue number | 15 |
| Online published | 11 Jul 2022 |
| DOIs | |
| Publication status | Published - 8 Aug 2022 |
Funding
The work described in this paper was supported by the Research Grants Council of Hong Kong SAR (CityU 11305920 and T42-103/16-N).
Research Keywords
- METAL-CATALYZED REACTIONS
- INSERTION REACTIONS
- BOND ACTIVATION
- CHEMISTRY
- OSMIUM
- CYCLIZATION
- VINYLIDENE
- OSMACYCLES
- REACTIVITY
- ALKYNES
Fingerprint
Dive into the research topics of 'Osmium(II)-Induced Rearrangement of Allenols for Metallafuran Complexes'. Together they form a unique fingerprint.Projects
- 2 Finished
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GRF: Constructing Metalated Heterocycles via Alkyne Cycloisomerization: Mechanism and Application
WONG, C. Y. A. (Principal Investigator / Project Coordinator)
1/01/21 → 12/06/25
Project: Research
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TBRS: A Compact System for Terahertz Imaging and Spectroscopy
CHAN, C. H. (Principal Investigator / Project Coordinator), LO, K. W. K. (Co-Principal Investigator), LUK, K. M. (Co-Principal Investigator), PUN, Y. B. E. (Co-Principal Investigator), Pang, S. (Co-Principal Investigator), SHAW, J. (Co-Principal Investigator), VELLAISAMY, A. L. R. (Co-Principal Investigator), CHAN, S. C. (Co-Investigator), DECROZE, C. (Co-Investigator), HO, J. C. Y. (Co-Investigator), JARRAHI, M. (Co-Investigator), LAM, Y. W. (Co-Investigator), LEE, E.-Y. J. (Co-Investigator), LEE, N. P. Y. (Co-Investigator), LEUNG, K. W. (Co-Investigator), LIU, H. (Co-Investigator), QU, S. (Co-Investigator), RENAUD, C. (Co-Investigator), Tong, K. (Co-Investigator), WANG, C. (Co-Investigator), WONG, H. (Co-Investigator), WONG, C. Y. A. (Co-Investigator), WONG, M. H. A. (Co-Investigator) & Wong, K. K. Y. (Co-Investigator)
1/01/17 → 30/06/23
Project: Research