Results 61 to 70 of about 150,986 (194)
MULTI-INSTRUMENTAL IDENTIFICATION OF ORPIMENT IN ARCHAEOLOGICAL MORTUARY CONTEXTS [PDF]
, 2014 Indexación: Web of Science; Scielo.This paper reports on an unknown yellowish mineral compound found in an archaeological context from Chorrillos cemetery (Calama, Chile) dating to the Early Formative period (800 - 200 B.C.).
ARRIAZA, BERNARDO +6 more
core +1 more source
Chemistry – A European Journal, EarlyView.An efficient Scholl–based strategy enables precise control of the C–C bond to access the first hexabenzocoronene–containing helical twistacene (NG2). The resulting nanographene shows pronounced helical distortion, high stability, enhanced solubility, and promising redox and optoelectronic properties.
Juan P. Mora‐Fuentes +8 more
wiley +1 more source
Métodos alternativos ao uso de insecticidas [PDF]
, 2013 Titulación: Licenciatura en Química -- Materia: Química orgánica agrícolaEsta unidade didáctica inclúese na materia de Química Orgánica Agrícola que se imparte no quinto curso da licenciatura en Química e supón unha carga lectiva de 60 horas.
Seco Castro, José Manuel
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Alkene Hydrogenation by a Cationic, Nine‐Coordinate Molybdenum(VI) Pentahydride Catalyst
Chemistry – A European Journal, EarlyView.While late 3d metals dominate efforts to replace precious metals in homogeneous hydrogenation, molybdenum has remained largely ignored. This work reveals that a nine‐coordinate pentahydrido molybdenum complex can hydrogenate a broad range of alkenes efficiently, demonstrating that early‐metal polyhydrides can serve as genuine catalysts rather than mere
Arno Estival +9 more
wiley +1 more source
SynOpen, 2017 Here we describe modified syntheses of o-acetylbenzoic acids and o-acetylphenylacetic acids by Heck palladium-catalysed arylation of n-butyl vinyl ether with o-iodobenzoic acids or with o-iodophenylacetic acids, respectively.
Jose C. Barcia +6 more
doaj +1 more source
The trypanocidal activity of the alkaloid oliverine involves inhibition of DNA synthesis [PDF]
, 2010 The Trypanosoma cruzi parasite is an etiologic agent of the American trypanosomiasis called Chagas disease. This pathology affects more than 24 million persons and represents one of the most important public health problems in Latin America.
Garro, Hugo Alejandro +5 more
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The Canadian Journal of Chemical Engineering, EarlyView.Abstract The synthesis and characterization of an amphiphilic nitroxide to be used as a controlling agent in a nitroxide‐mediated living radical polymerization in aqueous dispersion media is presented. In the first stage of nitroxide synthesis (phthalimide protection), two reaction methods were employed: traditional and microwave.
Enrique García‐Leal +3 more
wiley +1 more source
Allylsilanes in the synthesis of three to seven membered rings: the silylcuprate strategy
Beilstein Journal of Organic Chemistry, 2007 Addition of low order phenyldimethylsilylcyanocuprates to allenes followed by "in situ" reaction of the intermediate silylcuprate with electrophiles ("the silylcuprate strategy") provides new routes for the synthesis of functionalised allylsilanes, which
Asunción Barbero +2 more
doaj +1 more source
Guía de Evaluación: Química Orgánica [PDF]
, 2015 Guía de evaluación del ...
Avila Cordoba Liliana Ivette
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Poly(Ionic) Liquid‐Enhanced Ion Dynamics in Cellulose‐Derived Gel Polymer Electrolytes
ChemSusChem, Volume 18, Issue 6, March 15, 2025.Advancing Energy Storage: Gel Polymer Electrolytes with Promising Potential Gel polymer electrolytes (GPEs) incorporating methyl cellulose and a range of ionic/polymeric achieved Li+ transference numbers comparable to traditional liquid electrolytes.
Tiago G. Paiva +7 more
wiley +1 more source