Results 31 to 40 of about 151,000 (163)

From Light‐Driven to Dark Synthesis: Streamlining Perfluoroalkyl Selenide Ether Formation

European Journal of Organic Chemistry, Volume 29, Issue 5, 7 February 2026.
Two orthogonal and user‐friendly protocols enable the efficient construction of (Se/S)RF bonds from simple dichalcogenides and perfluoroalkyl iodides. Visible‐light irradiation at 395 nm promotes seleno‐ and thioether formation, while a dark KOH/MeCN variant delivers selenoethers in minutes. Both approaches operate under mild, metal‐ and photocatalyst‐
Loydel Torres Barroso, Romina S. Conde, Damian E. Yerien, Agustin A. Zottola, Al Postigo, Sebastian Barata‐Vallejo   +5 more
wiley   +1 more source

Síntesis y estudio fotoquímico de los derivados de 3-(E)-alquenil-4-metoxifenilacetanilidas y 2-(E)-alquenil-4-nitroanisoles [PDF]

Avances en Química, 2013
This work presents the synthesis and photochemical study of 3-(E)-alkenyl-4-methoxyphenylacetanilide 3a-c and 2-(E)-alkenyl-4-nitroanisole 3d-f derivatives.
Neudo Urdaneta, Amalia Franco, Nieves Canudas, Debora Deutsch, Julio Herrera   +4 more
doaj  

Synthesis of new pyrrolidine-based organocatalysts and study of their use in the asymmetric Michael addition of aldehydes to nitroolefins

Beilstein Journal of Organic Chemistry, 2017
New pyrrolidine-based organocatalysts with a bulky substituent at C2 were synthesized from chiral imines derived from (R)-glyceraldehyde acetonide by diastereoselective allylation followed by a sequential hydrozirconation/iodination reaction.
Alejandro Castán, Ramón Badorrey, José A. Gálvez, María D. Díaz-de-Villegas   +3 more
doaj   +1 more source

La investigación en la Universidad [PDF]

, 2001
Juan Carlos Rodríguez Ubis: Director del Servicio Interdepartamental de Investigación. Profesor Titular del Departamento de Química Orgánica de la U.A.M. Sus líneas de investigación se centran alrededor de la Química Supramolecular en las que se inició
Rodríguez Ubis, Juan Carlos
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Heterobimetallic Pt(II) Complexes Supported by 1,8‐Naphthyridine Ligands Confirm the Rotation of C6F5 Groups about the Pt−C Bond

Zeitschrift für anorganische und allgemeine Chemie, Volume 652, Issue 1, January 6, 2026.
You Spin Me Round. The ligand 1,8‐naphthyridine is able to stabilize heterobimetallic complexes containing Pt(II)→M (M = Ag, Cu) donor–acceptor bonds, in which the rotation of the C6F5 ligands in solution can be stopped at low temperature. The ligand 1,8‐naphthyridine (napy) exhibits a rich coordination chemistry arising from the disposition of its two
Alberto Pérez‐Bitrián, Carmen Munarriz, Angel J. Rueda, Antonio Martín, José M. Casas   +4 more
wiley   +1 more source

Glutathione Threshold‐Triggered Selective Breakability of Organosilica Nanocapsules

ChemCatChem, Volume 18, Issue 1, 15 January 2026.
Replacing tetraethoxy orthosilicate (TEOS) by tetramethoxy orthosilicate (TMOS) as silica precursor to synthesize cleavable organosilica nanocapsules enabled the effective and selective entrapment of a positively charged protein as Cytochrome C (CytC) and a much more favorable breakability and kinetics release when exposed to high glutathione (GSH ...
Andrea Mosseri, Ana Rueda‐Flores, Jose L. Hueso, Esteban Urriolabeitia, Luisa De Cola, Jesus Santamaria   +5 more
wiley   +1 more source

Ginkgo biloba: Antioxidant Activity and In Silico Central Nervous System Potential

Current Issues in Molecular Biology, 2023
Ginkgo biloba (GB) extracts have been used in clinical studies as an alternative therapy for Alzheimer’s disease (AD), but the exact bioaction mechanism has not yet been elucidated. In this work, an in silico study on GB metabolites was carried out using
Eduardo Suárez-González, Jesús Sandoval-Ramírez, Jorge Flores-Hernández, Alan Carrasco-Carballo   +3 more
doaj   +1 more source

Species functional traits affect regional and local dominance across western Amazonian forests

Journal of Ecology, Volume 114, Issue 1, January 2026.
Dominant tree species in western Amazonian forests show distinct functional trait combinations linked to habitat type: conservative traits in stressful habitats and greater plant size in less stressful environments. Local dominants are defined by resource conservation strategies and widespread dominants are defined by resource acquisition strategies. A
Laura Matas‐Granados, Claire Fortunel, Luis Cayuela, Julia G. de Aledo, Celina Ben Saadi, Nathan J. B. Kraft, Christopher Baraloto, S. Joseph Wright, Jason Vleminckx, Nancy C. Garwood, Peter Hietz, Margaret R. Metz, Frederick C. Draper, Timothy R. Baker, Oliver L. Phillips, Eurídice N. Honorio Coronado, Kalle Ruokolainen, Roosevelt García‐Villacorta, Katherine H. Roucoux, Maximilien Guèze, Elvis Valderrama Sandoval, Paul V. A. Fine, Carlos A. Amasifuen Guerra, Ricardo Zarate Gomez, Pablo R. Stevenson, Abel Monteagudo‐Mendoza, Rodolfo Vasquez Martinez, John Terborgh, Mathias Disney, Roel Brienen, Percy Núñez Vargas, Jhon del Aguila Pasquel, Yadvinder Malhi, Jacob B. Socolar, Gerardo Flores Llampazo, Jim Vega Arenas, Darcy Galiano Cabrera, Javier Silva Espejo, Joey Talbot, Barbara Vinceti, José Reyna Huaymacari, Cecilia Ballón Falcón, Ted R. Feldpausch, Varun Swamy, Julio M. Grandez Rios, Manuel J. Macía   +45 more
wiley   +1 more source

A Homobimetallic Frustrated Lewis Pair Cobalt Catalyst for the Methanolysis of Hydrosilanes

Angewandte Chemie, Volume 137, Issue 36, September 1, 2025.
The bimetallic Co(I)/Co(–I) complex [Co(CO)2(κ3‐P,N,P‐PNHP)][Co(CO)4] shows excellent activities in the methanolysis of hydrosilanes, reaching TOF values of ca. 50 000 h−1. This behavior can be ascribed to the presence of the [Co(CO)4]– anion, which allows for a frustrated Lewis pair mechanism, resulting in a low energy pathway for the heterolytic ...
Ana Luque‐Gómez, Daniel Barrena‐Espés, Pilar García‐Orduña, Andrea Pérez‐García, Miguel A. Casado, Julen Munarriz, Manuel Iglesias   +6 more
wiley   +2 more sources

Estudio teórico del mecanismo de reacción de formación de Alumosulfuros y Alumoxanos Ciclicos de cuatro miembros [PDF]

, 2013
El objetivo más importante de la química, es el estudio de la composición, propiedades y transformación de la materia. Para ello, es necesario conocer a detalle lo que sucede durante una reacción química: el cambio de reactivos a productos. La Química
Cortés Guzmán, Fernando, Díaz Gómez, Dalia Graciela   +1 more
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