Browsing by Author "Aliaga Silva, Christian Marcelo"
Now showing items 1-6 of 6
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3-(Triphenylphosphoranylidene)-pentane-2,4-dione and diethyl 2-(triphenylphosphoranylidene)-malonate (BLACKWELL PUBLISHING, 2005-08)The title ylides, 3-(triphenylphosphoranylidene) pentane-2,4-dione, C23H21O2P, (I), and diethyl 2-(triphenylphosphoranylidene)malonate, C25H25O4P, (II), differ in the conformations adopted by their extended ylide moieties. ...
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(TAYLOR & FRANCIS LTD, 2007-01)The diacyl ylid, 3-triphenylphosphoranylidene-2,4-pentanedione 2 can adopt conformations with one oxygen syn- and the other anti- to phosphorus 2a as in the crystal, or with both oxygens syn- to phosphorus 2b. In solution, ...
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(Universidad de Chile, 2006)Se estudia la descomposición térmica de sales de ésteres de alquiltrifenilfosfonio, Ph3P+-CH2-CO2RX- donde R es -CH3, -CH2-CH3, -CH(CH3)2 o -C(CH3)3 y X- corresponde a Br-, Cl- o TsO-. La formación de especies intermediarias ...
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(Universidad de Chile, 2012)La 7H-benzo[e]perimidin-7-ona (3-AOIA, A1), y 2-metil-7H-benzo[e]perimidin7-ona (2-Me-3-AOIA, A2) son fotoestables cuando son irradiados a una longitud de onda de 366 nm en presencia de oxígeno. Sin embargo, en soluciones ...
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(American Chemical Society, 2014)The thermally induced intermolecular electron transfer reaction in acetonitrile between the tetracyanoethylene (TCNE), a [pi]-electron acceptor with a large electron affinity, and six oxoisoaporphines (2,3-dihydro-7H-d ...
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(TAYLOR & FRANCIS LTD, 2008-05)In thermolyses of molten triphenylphosphonium alkyl ester bromides and chlorides, alkyl=methyl, ethyl, isopropyl, at 130 and 225 degrees C, initial attack of the halide ion on the methyl group gives the methyl halide and ...
