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Mostrando ítems 1-10 de 66
Artículo
Direct evidence for a coordination-insertion mechanism of ethylene oligomerization catalysed by neutral 2,6-bisiminopyridine iron monoalkyl complexes
(Royal Society of Chemistry, 2014)
1H NMR studies on ethylene oligomerization catalysed by the neutral monoalkyl complex [Fe(Me)(iPrBIP)] allow direct observation of alkyl iron intermediates as well as reversible ethylene coordination to the metal center, ...
Artículo
Oxygen-Induced Dimerization of Alkyl-Manganese(II) 2,6-Bisiminopyridine Complexes: Selective Synthesis of a New Ditopic NNN-Pincer Ligand
(American Chemical Society, 2016)
The outcome of the reaction of manganese(II) dialkyls with 2,6-bisiminopyridine (BIP) ligands is dramatically altered by the presence of very small amounts of oxygen (< 0.5 mol %), leading to binuclear species. These arise ...
Artículo
Preparation of Chitosan-supported Urea Materials and their Application in Some Organocatalytic Procedures
(Elsevier, 2018)
An efficient and mild procedure was developed for the preparation of three chitosan-supported ureas containing electron-withdrawing groups. These catalysts were characterized and employed as organocatalysts in different ...
Artículo
Improvement on binding of chondroitin sulfate derivatives to midkine by increasing hydrophobicity
(Royal Society of Chemistry, 2016)
The interactions between chondroitin sulfate (CS) and a wide number of proteins modulate important biological processes. Here, the binding properties to midkine and pleiotrophin of sulfated, fully protected intermediates, ...
Artículo
Unexpected loss of stereoselectivity in glycosylation reactions during the synthesis of chondroitin sulfate oligosaccharides
(Beilstein-Institut, 2019)
Here, we present an exploratory study on the fluorous-assisted synthesis of chondroitin sulfate (CS) oligosaccharides. Following this approach, a CS tetrasaccharide was prepared. However, in contrast to our previous results, ...
Artículo
Cell uptake mechanisms of glycosylated cationic pDNA-cyclodextrin nanoparticles
(Royal Society of Chemistry, 2015)
The incorporation of carbohydrate functional elements in the architecture of polycationic amphiphilic cyclodextrins (paCDs) provides glycosylated paCDs (pGaCDs) that form transfectious nanocomplexes (glycoCDplexes) with ...
Artículo
Hydrogenation of imines catalysed by ruthenium(ii) complexes based on lutidine-derived CNC pincer ligands
(Royal Society of Chemistry (Great Britain), 2013)
The preparation of new Ru(ii) complexes incorporating fac-coordinated lutidine-derived CNC ligands is reported. These derivatives are selectively deprotonated by tBuOK at one of the methylene arms of the pincer, leading ...
Artículo
Phosphane-decorated Platinum Nanoparticles as Efficient Catalysts for H2 Generation from Ammonia Borane and Methanol
(Wiley, 2019)
A series of narrowly dispersed Pt nanoparticles of 1.5-2.2 nm in size stabilized by bulky terphenylphosphane ligands has been synthesized by the organometallic method using [Pt(dba)2] as platinum source. These nanoparticles ...
Artículo
Aluminium(iii) dialkyl 2,6-bisimino-4R-dihydropyridinates(−1): selective synthesis, structure and controlled dimerization
(Royal Society of Chemistry, 2019)
A family of stable and otherwise selectively unachievable 2,6-bisimino-4-R-1,4-dihydropyridinate aluminium (III) dialkyl complexes [AlR’2(4-R-i PrBIPH)] (R = Bn, Allyl; R’ = Me, Et, i Bu) have been synthesized, taking ...
Artículo
Oxidative stress is tightly regulated by cytochrome c phosphorylation and respirasome factors in mitochondria
(National Academy of Sciences, 2018)
Respiratory cytochrome c has been found to be phosphorylated at tyrosine 97 in the postischemic brain upon neuroprotective insulin treatment, but how such posttranslational modification affects mitochondrial metabolism is ...