Browsing by Issue Date Artículos de revistas
Now showing items 1301-1320 of 2801
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(SOCIEDAD CHILENA DE QUIMICA, 2006-09)Cadmium (II) electrode based on plasticized PVC membranes with 1-furoyl-3,3-diethyl thiourea as ionophore and tributyl phosphate as plasticizer has been developed. The membrane was applied on a support of conducting epoxy ...
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A convenient and highly productive aminohydroxylation protocol employing an osmium-diamine catalyst (WILEY-V C H VERLAG GMBH, 2006-09)In situ generated osmium-diamine chelates from 2,3-diaminopropionic acid or diaminosuccinic acid represent efficient catalysts for the highly productive aminohydroxylation of alkenes. The reaction can be employed with ...
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(ELSEVIER SCIENCE SA, 2006-09)Three new nitrofuryl substituted 1,4-dihydropyridine derivatives were electrochemically tested in the scope of newly found compounds useful as chemotherapeutic alternative to the Chagas' disease. All the compounds were ...
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(SOCIEDAD CHILENA DE QUIMICA, 2006-09)Cadmium (II) electrode based on plasticized PVC membranes with 1-furoyl-3,3-diethyl thiourea as ionophore and tributyl phosphate as plasticizer has been developed. The membrane was applied on a support of conducting epoxy ...
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(BLACKWELL PUBLISHING, 2006-09)(E)-Ethyl 3-(4-oxo-4H-chromen-3-yl)acrylate reacts in a Domino reaction with ethyl vinyl ether via intermediates to give the title bridged compound, C20H22O6, and by-products. The conformation of the carboxylate group in ...
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(LIBRAPHARM, 2006-09)Objective: To summarize remission rates and dropouts due to adverse drug reactions (ADRs) or lack of efficacy (LoE) of serotonin-norepinephrine reuptake inhibitors (SNRIs), selective serotonin-reuptake inhibitors (SSRIs), ...
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(ELSEVIER, 2006-09-01)Copper(II) complexes of n-alkyl-2-hydroxy-1-naphthaldimine Schiff bases (with n-alkyl: n-octyl, and n-dodecyl) have been synthesized, to study steric and electronic effects of long alkyl chain substituents on their structure ...
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(ELSEVIER, 2006-09-08)The hybrid organic/inorganic copper oxovanadium diphosphonates of formula [Cu(bipy)(VO2)(2)(O3PCH2PO3)H2O] 1, which crystallizes in the orthorhombic symmetry, and [Cu(bipy)(VO2)(O3P(CH2)(2)PO2OH)] (.) 1.5H(2)O 2, which ...
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(ELSEVIER, 2006-09-25)A simple microwave-assisted extraction and partitioning method (MAEP) using water-acetonitrile and n-hexane for desorption and simultaneous partitioning, respectively, together with gas chromatography (GC) was studied to ...
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(ELSEVIER SCIENCE BV, 2006-09-29)Theoretical studies of molecular conformations and electronic properties calculations of eight 5-nitrofuryl thiosemicarbazone free radicals, by means of ab initio (R/UHF), and DFT (R/UB3LYP) methods are presented and ...
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(BLACKWELL PUBLISHING, 2006-10)The molecule of the title compound, C19H20O2S, corresponds to a chiral sulfinyldienol with two stereogenic centres, viz. the C atom susbtituted by the hydroxy group and the sulfinyl S atom. The molecule displays a V-shape ...
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(SPRINGER/PLENUM PUBLISHERS, 2006-10)5,6-Dimethoxy-2,3-dihydro-7H-dibenzo[de,h] quinolin-7-one has been synthesized by cyclization of phenylethylaminophtalides with polyphosphoric acid and characterized by X-ray diffraction and NMR assignments. A theoretical ...
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(SPRINGER/PLENUM PUBLISHERS, 2006-10)5,6-Dimethoxy-2,3-dihydro-7H-dibenzo[de,h] quinolin-7-one has been synthesized by cyclization of phenylethylaminophtalides with polyphosphoric acid and characterized by X-ray diffraction and NMR assignments. A theoretical ...
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(ELSEVIER, 2006-10-01)The structure and magnetic properties of two hybrid VPO compounds [(Cu(2)bipy(2))(2)V4O11(PO4)(2)]center dot 5H(2)0 1 and [Cu(2)phen(2)(O3PCH2PO3)(V2O5)(H2O)] center dot H2O 2 are reported. The magnetic behaviour of compound ...
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(ELSEVIER, 2006-10-01)Density functional theory (DFT) calculations on the tetranuclear Ni(II) complex [Ni-4(C5H11O3)(4) (CH3CN)(4)](NO3)(4)center dot 1.33NaNO(3), have been made in order to explain the exchange magnetic phenomenon. Two ferromagnetic ...
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(ELSEVIER, 2006-10-11)The folk medicine employs Schinus polygamus to treat arthritic pain and cleansing of wounds. As no reports of pharmacological studies supporting its anti-inflammatory and analgesic properties, extracts of increasing polarity ...
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(PERGAMON-ELSEVIER SCIENCE, 2006-10-25)The electrochemical reduction of 2-nitroimidazole in a non-aqueous medium using cyclic voltammetry (CV) at a mercury electrode was carried out. The 2-nitroimidazole derivative in DMF + 0.1 M tetra(n-butyl)ammonium ...
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(ELSEVIER, 2006-11)Rhenium and ruthenium complexes of the type [(ReOCl2)-O-V(PPh3)L] and [(RuC2)-C-II(DMSO)(2)L], where L are 5-nitroftitylsemicarbazone derivatives, were prepared in an effort to obtain new anti-trypanosomal agents combining ...
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(ELSEVIER, 2006-11)Microspheres (MS) from different polymers were prepared using two routes. Route A: process of phase inversion with solutions of polysulfone (PSf) in dichloromethane (DCM) and polyvinylpyrrolidone (PVP) as additive. Different ...
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(ELSEVIER, 2006-11-03)In the present work the efficiency of extraction of aliphatic diesel range organics (DROs) and polycyclic aromatic hydrocarbons (PAHs) from soil was assessed by using dynamic modes of pressurized solvent extraction (PSE), ...