923952-55-0Relevant articles and documents
Assessment of catalysis by arene-ruthenium complexes containing phosphane or NHC groups bearing pendant conjugated diene systems
Baraut, Johann,Massard, Alexandre,Chotard, Florian,Bodio, Ewen,Picquet, Michel,Richard, Philippe,Borguet, Yannick,Nicks, Fran?ois,Demonceau, Albert,Le Gendre, Pierre
, p. 2671 - 2682 (2015)
Two p-cymene-ruthenium complexes 1 and 2 were isolated in high yields by treating the [RuCl2(p-cymene)]2 dimer with new hybrid phosphane- or NHC-linked diene ligands. Both complexes were fully characterized by NMR spectroscopy, and the molecular structure of the ruthenium-p-cymene complex 1, containing the phosphane-diene ligand system, was determined by X-ray diffraction analysis. The catalytic activities of both compounds were probed in atom-transfer radical addition (ATRA) and polymerization (ATRP), in the cyclopropanation of olefins, in the ring-opening metathesis polymerization (ROMP) of norbornene, and in the synthesis of enol esters from hex-1-yne and 4-acetoxybenzoic acid.
A monomer-dimer nanoswitch that mimics the working principle of the SARS-CoV 3CLpro enzyme controls copper-catalysed cyclopropanation
De, Soumen,Pramanik, Susnata,Schmittel, Michael
supporting information, p. 10977 - 10982 (2014/07/08)
A triangular framework with a terpyridine and shielded phenanthroline at its termini constitutes an open/close nanoswitch that is toggled by chemical inputs. In the presence of copper(i) ions, the open triangular framework (OPEN-I) firmly closes to a catalytically inactive heteroleptic [Cu(phen)(terpy)]+ complex (CLOSE). Reversible switching between CLOSE and OPEN-I states was demonstrated by successive addition and removal of Cu+. In contrast, after addition of iron(ii) ions to the CLOSE state a bishomoleptic dimeric [Fe(terpy)2]2+ complex is formed with the copper(i) ions placed in the phenanthroline cavities (OPEN-II). Due to its coordinatively unsaturated [Cu(Phen)]+ sites the dimeric iron complex is able to serve as a catalyst in the cyclopropanation of Z-cyclooctene using ethyl diazoacetate.
Olefin cyclopropanation reactions catalysed by novel ruthenacarborane clusters
Demonceau,Saive,De Froidmont,Noels,Hubert,Chizhevsky,Lobanova,Bregadze
, p. 2009 - 2012 (2007/10/02)
Novel ruthenacarborane clusters exhibit high activity as cyclopropanation catalysts in reactions between ethyl diazoacetate and alkenes.
