Browsing by Title Facultad de Ciencias
Now showing items 7320-7339 of 8166
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(2009)1,5-Benzodiazepines have been synthesized from the corresponding 2'-hydroxychalcones [1-(2-hydroxyphenyl)-3-aryl-2-propen-1-ones] and o-phenylenediamine, both in methanol, under reflux and under solvent-free microwave ...
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(SOCIEDAD CHILENA DE QUIMICA, 2006-03)A simple synthetic route for the preparation of 2-phenyl-1,3-propanediamines, based on a Knoevenagel-Michael double condensation followed by reduction, was developed using nitromethane as reagent and solvent, and sodium ...
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(Sociedad Química de Chile, 2006)A simple synthetic route for the preparation of 2-phenyl-I,3-propanediamines, based on a Knoevenagel-Michael double .:ondensation followed by reduction, was developed using nitromethane as reagent and solvent, and sodium ...
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(SOC CHILENA QUIMICA, 2009-07-20)The synthesis of 4,5,8,12b-tetrahydroisoindolo[1,2-a]isoquinolin-8-ones is reviewed The unsubstituted parent compound, a series of fourteen A-ring-substituted derivatives, most of them new, and some of their doubly benzylic, ...
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(2007)Coupling nicotinoyl chloride with 3,4-dimetoxyphenethylamine under Bischler-Napieralski cyclization afforded the isoquinoline (4) in good yield. This latter was used as starting material to obtain with only hydrobromic ...
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(2001)The synthesis of low-density polyethylene from ethylene as the only monomer feed has been investigated as an alternative route to branched polyethylene and to obtain new materials with different properties, avoiding the ...
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(Elsevier, 2015)An efficient, green, and atom economic methodology for the stereoselective synthesis of C-2 symmetry (3R,4R)-TTFOL diester derivatives has been developed. The procedure occurs through a (2R,3R)-TADDOL dioxolane cleavage ...
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(Elsevier, 2014)Three coumarin-derived fluorescent probes, 3-acetyl-7-[(6-bromohexyl)oxy]-2H-chromen-2-one (FM1), 7-[(6-bromohexyl)oxy]-4-methyl-2H-chromen-2-one (FM2) and ethyl 2-{7-[(6-bromohexyl)oxy]-2-oxo- 2H-chromen-4-yl}acetate ...
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(Elsevier, 2016)In the current study, a new approach to the synthesis of highly destacked ReS2 layers embedded in amorphous carbon via the thermal decomposition of a tetraoctylammonium perrhenate precursor, under sulfidizing atmosphere ...
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(1972)Water soluble enzymes obtained from Pinus radiata seedlings form two sesquiterpene alcohols from 2-14C mevalonic acid. They have been identified as 2,6-trans,trans-farnesol and 2-cis,6-trans-farnesol. The pyrophosphate of ...
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(AMER CHEMICAL SOC, 2010-10-20)Lakshminine (6-amino-1-aza-5-methoxy-7H-dibenzo[de,h]quinolin-7-one, 1) is a recent addition to the small family of oxoisoaporphine alkaloids and a member of an even smaller set bearing an amino group at C-6. This rare ...
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(1982)A partially purified enzyme preparation from the flavedo of Citrus limonum utilized [1-3H]linalyl pyrophosphate as a substrate for cyclic terpene hydrocarbon formation more efficiently than the pyrophosphates of nerol and ...
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(Sociedad Chilena de Quimica, 2014)In the last four years a group of extremely potent designer drugs, the N-benzylated phenylethylamines known as the NBOMe series, has surfaced on the street and in the news media. Although data documenting their high affinity ...
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Synthesis of nanostructured materials by a new solid state pyrolysis organometallic polymer method (2005)In this study, the preparation of nanostructured particles of metal/metal oxides by using a pyrolysis of organometallic polyphosphazenes having the metal anchored to the polymeric chain is described. The elaboration process ...
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(2016)A p-tertbutylcalix[4]arene derivative was synthesized from a reaction of the diisothiocyanate p-tertbutylcalix[4]arene, obtaining crystals that were then characterized by mass spectroscopy, Raman spectroscopy, and ...
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(2003)The preparation and spectroscopic properties of new dipyrido[3,2-a:2′,3′-c]phenazine ruthenium complexes are described. The complexes show high catalytic activity in the water gas shift reaction in a basic medium under ...
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(2013)A novel methodology for the synthesis of S- and N-functionalized dithiocarbamates starting from cyclic sulfates, amines and carbon disulfide by using different protocols, including microwave assistance and a multicomponent ...
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Synthesis, characterization and crystal structure of [Ru(tppz)(4,4′-(CH3)2bpy)Cl](PF6), (tppz = ... (Elsevier Ltd, 1996)The synthesis and characterization of the complex [Ru(tppz)(4,4′-(CH3)2bpy) Cl]+ , where tppz = 2,3,5,6-tetrakis(2-pyridyl)pyrazine, is reported. The ion was obtained in a one pot synthesis by reduction of Ru(4,4′-(CH3)2bpy)Cl4 ...
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(2003)The new quaternary selenophosphate phases AMP2Se6 (A ¼ Cu, Ag and M ¼ Bi, Sb) were synthesized by ceramic methods at 1023 K. These phases were characterized by powder X-ray diffraction (XRD), Fourier transform infrared ...