Results 61 to 70 of about 182,970 (169)
The Preparatory (Anti)Bonding Character of Molecular Orbitals
Advanced Science, EarlyView.Herein, a concept to qualitatively predict changes in bond dissociation energies upon reduction or oxidation of molecular compounds is introduced. Changing the population of so‐called preparatory molecular orbitals influences how molecular fragments are relaxing after bond cleavage, which is shown for isolated organometallic aluminum compounds as well ...
Jonas O. Wenzel +10 more
wiley +1 more source
Natural Product Communications, 2007 A method for the isolation of three compounds from the infusion of leaves of Byrsonima basiloba A. Juss. by high-speed counter-current chromatography (HSCCC) was developed.
Miriam Sannomiya +6 more
doaj +1 more source
Fundamentos teóricos de química orgánica
Fundamentos teóricos de química orgánica es una obra integral que proporciona una comprensión sólida de los principios fundamentales de la química orgánica, dirigida tanto a estudiantes como a profesionales. El libro abarca desde los conceptos básicos de
C. Ruiz-Sánchez +2 more
semanticscholar +1 more source
SALA DE AULA INVERTIDA NO ENSINO DA QUÍMICA ORGÂNICA: UM ESTUDO DE CASO
, 2020 FLIPPED CLASSROOM IN TEACHING ORGANIC CHEMISTRY: A CASE STUDY. The flipped classroom is one of the types of rotation model strategies that aim of increasing interaction and personalized contact time between students and teachers in the classroom setting.
Bruna Silva +2 more
semanticscholar +1 more source
Beilstein Journal of Organic Chemistry, 2014 Three new porphyrin aminoalkyl dibenzylphosphoramidates were synthesized by nucleophilic aromatic substitution of one p-fluorine atom of 5,10,15,20-tetrakis(pentafluorophenyl)porphyrin (TPPF20) by primary aminoalkyl dibenzylphosphoramidates.
Marcos C. de Souza +5 more
doaj +1 more source
Menadione: a platform and a target to valuable compounds synthesis
Beilstein Journal of Organic Chemistry, 2022 Naphthoquinones are important natural or synthetic compounds belonging to the general class of quinones. Many compounds in this class have become drugs that are on the pharmaceutical market for the treatment of various diseases.
Acácio S. de Souza +8 more
doaj +1 more source
Chiral Separations in Preparative Scale: A Medicinal Chemistry Point of View
Molecules, 2020 Enantiomeric separation is a key step in the development of a new chiral drug. Preparative liquid chromatography (LC) continues to be the technique of choice either during the drug discovery process, to achieve a few milligrams, or to a scale-up during ...
Madalena M.M. Pinto +2 more
doaj +1 more source
Incidencia de los Recursos Lúdicos en el Proceso de Enseñanza – Aprendizaje de la Química Orgánica I
Educacion Quimica, 2019 Este trabajo de investigación tiene la finalidad de diseñar, elaborar, implementar y evaluar recursos lúdicos, utilizados como herramienta de apoyo en el proceso de enseñanza - aprendizaje de la asignatura de Química Orgánica I en el programa académico ...
A. Mosquera, Dary Stella Barajas Perea
semanticscholar +1 more source
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
Synthesis of (macro)heterocycles by consecutive/repetitive isocyanide-based multicomponent reactions
Beilstein Journal of Organic Chemistry, 2019 Isocyanide-based multicomponent reactions are a versatile tool in the synthesis of heterocycles. This review describes recently developed approaches based on the combination of consecutive or repetitive isocyanide-based multicomponent reactions for the ...
Angélica de Fátima S. Barreto +1 more
doaj +1 more source