Centres de Recerca de Catalunya (CERCA)
Mostrando ítems 1-20 de 1240
A dual photocatalytic sulfonylation-arylation of electron-rich alkenes is described. By combining sulfinate salts, (hetero)-aryl-bromides and 2,3-dihydrofuran under Ru and Ni dual catalysis, over 35 examples of aryl-sulfonylated ...
We report the synthesis of two 2-(4’-pyridyl-N-oxide)-substituted hemithioindigos. We probed their photoisomerization using UV-Vis and 1H NMR spectroscopic techniques. Light irradiation at 450 nm provoked the isomerization ...
Small molecule organic semiconductors (SMOSs) have emerged as a new class of photocatalysts that exhibit visible light absorption, tunable bandgap, good dispersion, and solubility. However, the recovery and reusability of ...
The design and development of 5,5’-bistriazoles featuring aminomethyl substituents is discussed. An efficient synthetic procedure for the selective preparation of 4,4’-bis(aminomethyl)-5,5’-bistriazoles from commercially ...
The 9-cobalt(II)-containing trimeric, cyclic polyanion [Co9(OH)3(H2O)6(PO4)2(B-α-GeW9O34)3]21− (1) was synthesized in an aqueous phosphate solution at pH 8 and isolated as a hydrated mixed sodium−cesium salt. Polyanion ...
We describe using a dynamically self-assembled octa-imine cage as a molecular flask to accelerate a bimolecular Diels–Alder reaction. We investigate the cage’s binding properties using 1H NMR spectroscopic titrations, ITC ...
A diruthenium dyad molecule consisting of a 2,2-(1H-pyrazole-3,5-diyl)dipyridine (Hbpp) bridging ligand with the formula out-/in-[(bpy)2Ru(bpp)Ru(L)(tpy)]n+ (bpy = 2,2′-bipyridine, tpy = 2,2′:6′,2′′-terpyridine, L = Cl, ...
A new Ru complex with the formula [Ru(bpn)(pic)2]Cl2 (where bpn is 2,2′-bi(1,10-phenanthroline) and pic stands for 4-picoline) (1Cl2) is synthesized to investigate the true nature of active species involved in the ...
Chiral bipyrimidine-bridged dinuclear LnIII complexes of general formula [(μ-bipym){((+)-tfacam)3Ln}2] and [(μ-bipym){((-)-tfacam)3Ln}2], have been prepared from the assembly of Ln(AcO)3·nH2O (LnIII = Dy, Gd), (+)/(−)-3- ...
Sigma complexes containing η2-H2 ligands, with both hydrogen atoms interacting with the metal center and with each other, are well known nowadays. The possibility of η1-H2 coordination, with only one hydrogen atom interacting ...
The production of propylene from renewable resources might be relevant to provide this compound in a scenario of scarcity due to the use of shale gas as a raw material. In the present, work we provide a full density ...
Prussian blue and its related compounds are formed by cheap and abundant metals and have shown their importance in the generation of new fuels by renewable sources. To optimize these compounds it is important to understand ...
An efficient protocol was developed to construct functionally dense quaternary carbons with concomitant formation of a new Csp3-Csp3 bond via Pd-catalyzed decarboxylative transformation of vinyl cyclic carbonates. This ...
<p style="text-align: justify;"> A polystyrene-linked tris(triazolyl)methanecopper(I) cationic catalyst operates under heterogeneous conditions for the reaction of ethyl diazoacetate (EDA) with an array of substrates. ...
Due to their strong covalent bonds and low reduction potentials, activating inert substrates is challenging. Recent advances in photoredox catalysis offered a number of solutions, each of which useful for activating specific ...
We report herein a modular class of organic catalysts that, acting as donors, can readily form photoactive electron donor–acceptor (EDA) complexes with a variety of radical precursors. Excitation with visible light generates ...
Single metal atoms on doped carbons constitute a new class of extremely appealing materials, as they present the best metal utilization for catalysis. However, their stability can be compromised by metal aggregation and ...
