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Now showing items 3284-3303 of 3676

Synthesis and structure of some heterobimetallic complexes having a polyalkyl-s-indacenyl spacer

Morales-Verdejo C.; Martinez I.; Mac-Leod Carey D.; Chavez I.; Manriquez J.M.; Matioszek D.; Saffon N.; Castel A.; Riviere P.; Molins E. (2014-04-04)

Three heterobimetallic complexes LmM(s-Ic′)M′Ln (M = Fe,Ru or Mn; M′ = Ni) having the same Cp ∞ nickel moiety and based on a polyalkyl-s-indacenyl spacer (s-Ic′ = 2,6-diethyl-4,8-dimethyl-s- indacenyl) were synthesized by ...
Synthesis and usage of common and functionalized ionic liquids for biogas upgrading

Bidart C.; Jimenez R.; Carlesi C.; Flores M.; Berg A. (2014-04-04)

Halide imidazolium-based ionic liquids 1-butyl-3-methylimidazolium bromide [bmim][Br] and 1-propylamine-3-methylimidazolium bromide [pamim][Br] were synthesised and tested experimentally as absorbents for biogas upgrading. ...
Synthesis of 3′,4′-disubstituted terthiophenes - Characterization and electropolymerization. II. S′-bromo-4′-thienyl- 2,2′:5′,2′-terthiophene and 3′,4′-diphenyl-2, 2′:5′,2′-terthiophene in photovoltaic displays

Velez J.H.; Diaz F.R.; Del Valle M.A.; Bernede J.C.; Soto J.P. (2014-04-04)

In a previous work 3′,4′-dibromo substituted polythiophene film was used to produce an electronic device with photovoltaic characteristic but only 0.006% yield was achieved. In an effort to understand the reason of this ...
Synthesis of a new ent-cyclozonarone angular analog, and comparison of its cytotoxicity and apoptotic effects with ent-cyclozonarone

Sobarzo N.Q.; Venegas I.M.; Sanchez C.S.; Catalan L.E.; Rojas C.C.; Valdivia V.U.; Garcia J.V.; Fritis M.C. (2014-04-04)

The synthesis of a newangular analog 11 of cyclozonarone was achieved via Diels-Alder reaction between a sesquiterpene-1,3-diene and 1,4-benzoquinone. The cytotoxic activity of ent-cyclozonarone [(+)-10] and the angular ...
Synthesis of Ascorbyl Palmitate with Immobilized Lipase from Pseudomonas stutzeri

Santibanez L.; Wilson L.; Illanes A. (2014-04-04)

Synthesis of ascorbyl palmitate by enzymatic esterification of palmitic acid and ascorbic acid was conducted in an organic medium with Pseudomonas stutzeri lipase TL immobilized in different supports and its performance ...
Synthesis of cephalexin in aqueous medium with carrier-bound and carrier-free penicillin acylase biocatalysts

Illanes A.; Wilson L.; Aguirre C. (2014-04-04)

The use of very high substrate concentrations favors the kinetically controlled synthesis of cephalexin with penicillin acylase (PA) not only by Michaelian considerations, but also because water activity is depressed, so ...
Synthesis of cephalexin with immobilized penicillin acylase at very high substrate concentrations in fully aqueous medium

Illanes A.; Wilson L.; Corrotea O.; Tavernini L.; Zamorano F.; Aguirre C. (2014-04-04)

The presence of organic cosolvents was previously considered necessary to obtain high conversion yields in the synthesis of β-lactam antibiotics with immobilized penicillin acylase, and it is so when working at moderate ...
Synthesis of galacto-oligosaccharides at very high lactose concentrations with immobilized β-galactosidases from Aspergillus oryzae

Huerta L.M.; Vera C.; Guerrero C.; Wilson L.; Illanes A. (2014-04-04)

β-Galactosidase from Aspergillus oryzae was immobilized by different methods, being the enzyme immobilized in glyoxyl-agarose selected for the synthesis of galacto-oligosaccharides from lactose at high concentrations. The ...
Synthesis of galacto-oligosaccharides by β-galactosidase from Aspergillus oryzae using partially dissolved and supersaturated solution of lactose

Vera C.; Guerrero C.; Conejeros R.; Illanes A. (2014-04-04)

The effect of enzyme to substrate ratio, initial lactose concentration and temperature has been studied for the kinetically controlled reaction of lactose transgalactosylation with Aspergillus oryzae β-galactosidase, to ...
Synthesis of N-acylated 1,5-benzodiazepines: Differentiation between two possible acylation sites via hydrogen bonding

Escobar C.A.; Alvarado O.A.; Howard J.A.K.; Fuentealba M. (2014-04-04)

Temperature-dependent regioselectivity between amino and hydroxyl groups mediated by hydrogen bonding was observed in the reaction of acetic anhydride with 2-(2,3-dimethoxyphenyl)-4-(2-hydroxyphenyl)-2,3-dihydro-1H-1,5-benzodiaz ...
Synthesis of pacific ocean climate and ecosystem dynamics

Di Lorenzo E.; Combes V.; Keister J.E.; Strub P.T.; Thomas A.C.; Franks P.J.S.; Ohman M.D.; Furtado J.C.; Bracco A.; Bograd S.J.; Peterson W.T.; Schwing F.B.; Chiba S.; Taguchi B.; Hormazabal S.; Parada C. (2014-04-04)

The goal of the Pacific Ocean Boundary Ecosystem and Climate Study (POBEX) was to diagnose the large-scale climate controls on regional transport dynamics and lower trophic marine ecosystem variability in Pacific Ocean ...
Synthesis of pheromones: Highlights from 2002-2004

Zarbin P.H.G.; Villar J.A.F.P.; Marchi I.; Bergmann J.; Oliveira A.R.M. (2014-04-04)

This review summarizes the synthesis of pheromones published in the triennium 2002-2004. The syntheses of a total of 66 pheromone compounds (65 from insects, 1 from a crustacean species), belonging to 9 different structural ...
Synthesis of pheromones: Highlights from 2005-2007

Bergmann J.; Villar J.A.F.P.; Flores M.F.; Zarbin P.H.G. (2014-04-04)

The synthesis of insect pheromones published in the period 2005-2007 is reviewed. A total of 66 compounds from different insect orders and belonging to different structural classes were included. © 2009 Bentham Science ...
Synthesis, characterisation, and antineoplastic cytotoxicity of hybrid naphthohydroquinone-nucleic base mimic derivatives

Molinari A.; Ojeda C.; Oliva A.; Miguel Del Corral J.M.; Castro M.A.; Garcia P.A.; Cuevas C.; San Feliciano A. (2014-04-04)

From a partially degraded Diels-Alder adduct of α-myrcene and 1,4-benzoquinone, several model compounds belonging to a new series of 1,4-naphthohydroquinone derivatives have been prepared. Phenyl, pyridyl, imidazolyl and ...
Synthesis, characterization and anti-Trypanosoma cruzi evaluation of ferrocenyl and cyrhetrenyl imines derived from 5-nitrofurane

Arancibia R.; Klahn A.H.; Buono-Core G.E.; Gutierrez-Puebla E.; Monge A.; Medina M.E.; Olea-Azar C.; Maya J.D.; Godoy F. (2014-04-04)

A series of new cyrhetrenyl and ferrocenylimines complexes derived from 5-nitrofurane were designed, synthesized and characterized. The 1H and 13C NMR spectra indicate that these compounds adopt an anti-(E) conformation ...
Synthesis, characterization and crystal structure of the tridentate metalloligand formed from mono-condensation of ferrocenoylacetone and 1,2-phenylenediamine

Fuentealba M.; Trujillo A.; Hamon J.-R.; Carrillo D.; Manzur C. (2014-04-04)

Reaction of the ferrocenoylacetone 1 with o-phenylenediamine in refluxing dry toluene affords the new air and thermally stable organometallic tridentate compound ("half unit") 2, which was isolated and characterized by ...
Synthesis, characterization and in vitro anti-Trypanosoma cruzi and anti-Mycobacterium tuberculosis evaluations of cyrhetrenyl and ferrocenyl thiosemicarbazones

Arancibia R.; Klahn A.H.; Lapier M.; Maya J.D.; Ibanez A.; Garland M.T.; Carrere-Kremer S.; Kremer L.; Biot C. (2014-04-04)

To study the electronic influence of the organometallic moieties in thiosemicarbazones, two short libraries of cyrhetrenyl thiosemicarbazone and ferrocenyl thiosemicarbazone hybrids were synthesized and tested for their ...
Synthesis, characterization and polymerization of thiophene units anchored with an imine-type mesogen group

Soto J.P.; Del Valle M.A.; Diaz F.R.; Velez J.H.; East G.A. (2014-04-04)

Thiophene structures anchored in position 3 of the ring were synthesized using spacers of different lengths (6,8,10, and 12 carbon atoms linked to a 2-((4-octylphenylimino)methyl)phenol) group. The thermal studies of the ...
Synthesis, characterization and X-ray crystal structure of an allyloxo functionalized nonsymmetric nickel coordination complex based on N2O2 chelating ferrocenyl ligand

Trujillo A.; Fuentealba M.; Carrillo D.; Manzur C.; Hamon J.-R. (2014-04-04)

The synthesis of the new air and thermally stable orange neutral dinuclear iron-nickel unsymmetrical Schiff base complex, [8-(2-oxo,5-allyloxo-phenyl)-4,7-diaza-3-methyl-1-ferrocenyl-1-one-octa-1,3,7-trienato]nickel(II) ...
Synthesis, electropolymerization, and photoelectrochemical characterization of 2,7-di(thiophen-2-yl)-N-methylcarbazole

Aristizabal J.A.; Soto J.P.; Ballesteros L.; Munoz E.; Ahumada J.C. (2014-04-04)

A new copolymer derived from 2,7-carbazole with thiophene is reported. This copolymer was obtained through the synthesis of 2,7-dibromo-N-methyl carbazole and 2-bromothiophene using a Kumada-type reaction to bond both rings ...

Now showing items 3284-3303 of 3676

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