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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
chemistry
Coordinatively unsaturated ruthenium complexes as efficient alkyneazide cycloaddition catalysts
Organometallics, Volume 31, No. 2, Year 2012
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Description
The performance of 16-electron ruthenium complexes with the general formula Cp*Ru(L)X (in which L = phosphine or N-heterocyclic carbene ligand; X = Cl or OCH2CF3) was explored in azidealkyne cycloaddition reactions that afford the 1,2,3- triazole products. The scope of the Cp*Ru(PiPr 3)Cl precatalyst was investigated for terminal alkynes leading to new 1,5-disubstituted 1,2,3-triazoles in high yields. Mechanistic studies were conducted and revealed a number of proposed intermediates. Cp*Ru- (PiPr3)(2-HCCPh)Cl was observed and characterized by 1H, 13C, and 31P NMR at temperatures between 273 and 213 K. A rare example of N,N-κ2-phosphazide complex, Cp*Ru(κ2- iPr3PN3Bn)Cl, was fully characterized, and a single-crystal X-ray diffraction structure was obtained. DFT calculations describe a complete map of the catalytic reactivity with phenylacetylene and/or benzylazide. © 2012 American Chemical Society.
Authors & Co-Authors
Lamberti, Marina
United Kingdom, St Andrews
University of st Andrews
Italy, Salerno
Università Degli Studi Di Salerno
Fortman, George C.
United Kingdom, St Andrews
University of st Andrews
Poater, Albert
Spain, Girona
Universitat de Girona
Broggi, Julie
United Kingdom, St Andrews
University of st Andrews
Slawin, Alexandra M.Z.
United Kingdom, St Andrews
University of st Andrews
Cavallo, Luigi
Saudi Arabia, Thuwal
King Abdullah University of Science and Technology
Nolan, Steven Patrick
United Kingdom, St Andrews
University of st Andrews
Statistics
Citations: 70
Authors: 7
Affiliations: 4
Identifiers
Doi:
10.1021/om2012425
ISSN:
02767333
e-ISSN:
15206041