Results 31 to 40 of about 22,388 (172)

Contribución de la química orgánica al desarrollo de la citoquímica e histoquímica [PDF]

, 1993
La aplicación de la química orgánica a las ciencias biológicas ha venido a trocar el carácter puramente descriptivo y observacional de la Histología, sentando las bases para su transformación en una ciencia dinámica y funcional, complementaria y ...
Castillo B., Juan Paz
core   +1 more source

New Short Strategy for the Synthesis of the Dibenz[b,f]oxepin Scaffold

Molecules, 2013
In this report a short and efficient synthesis of the dibenz[b,f]oxepin framework through intramolecular SNAr and McMurry reactions is described. The diaryl ethers required for the McMurry reaction have been obtained in good yields under microwave ...
David R. R. Moreno, Giorgio Giorgi, Cristian O. Salas, Ricardo A. Tapia   +3 more
doaj   +1 more source

Counterintuitive Fluorescence Blue Shift in Symmetry Breaking Dicationic Bis(indolium) with Two‐Photon Absorption Properties for NIR Living Cell Imaging

Advanced Materials, EarlyView.
Highly water‐soluble dicationic bis(indolium) dyes have been prepared, showing excellent two‐photon absorption and light emission. Their fluorescence behavior discloses an unusual increasing blue shift with increasing solvent polarity, which, in parallel, is beneficial for enhanced detection in biological media.
Carlos Benitez‐Martin, Jose M. Marin‐Beloqui, Juan T. López Navarrete, Juan Casado, Francisco Najera, Ezequiel Perez‐Inestrosa   +5 more
wiley   +1 more source

Unprecedented Elimination Reactions of Cyclic Aldols: A New Biosynthetic Pathway toward the Taiwaniaquinoid Skeleton

Molecules, 2023
The acid treatment of 6,7-seco-abietane dialdehydes gives, in high yield, the corresponding derivatives with the 4a-methyltetrahydrofluorene skeleton of taiwaniaquinoids.
Juan J. Guardia, Antonio Fernández, José Justicia, Houda Zentar, Ramón Alvarez-Manzaneda, Enrique Alvarez-Manzaneda, Rachid Chahboun   +6 more
doaj   +1 more source

Self‐Cooling Molecular Spin Qudits

Advanced Materials, EarlyView.
A material made of [GdEr] molecular dimers can encode a qudit and perform as a magnetic refrigerant. Microwave resonant pulses coherently manipulate its 16 spin states, while direct demagnetization measurements cool the material and a device down to temperatures below 1 K.
Elías Palacios, David Aguilà, David Gracia, Diamatoula Maniaki, Leoní A. Barrios, Alessandro Chiesa, Jesús I. Martínez, Valentin Novikov, Olivier Roubeau, Stefano Carretta, Marco Evangelisti, Guillem Aromí, Fernando Luis   +12 more
wiley   +1 more source

QUÍMICA ORGÁNICA HETEROALIFÁTICA Y POLÍMEROS - FACULTAD DE QUÍMICA [PDF]

, 2003
Programa de Aprendizaje de QUÍMICA ORGÁNICA HETEROALIFÁTICA Y POLÍMEROS de la Facultad de ...
INGENIERÍA QUÍMICA
core  

Propuesta para un enfoque de la Química Orgánica contextualizado desde la Química Verde, apoyado con TIC [PDF]

, 2021
Se describe una propuesta de enseñanza para un curso introductorio de química orgánica dirigido a estudiantes de profesorado de química. Esta propuesta tiene como eje la vinculación de dicha rama de la química con la perspectiva de la ...
Casullo, Pedro
core   +2 more sources

A Cu‐Based Near‐IR Active MOF with an Ion‐Pair Guest Exhibiting Versatile and Selective Gas‐Solid Reactivity

Advanced Materials, EarlyView.
The new Cu‐containing MOF (Me2NH2)(CuICl2)@[Cu4(INA)4Cl2O]·1.5dmf (3) contains a cation and an anion as guests and shows UV‐near‐mid‐IR absorption and near‐IR emission. MOF 3 shows gas‐solid reactivity in the presence of NH3 and HCOOH to yield two new 3D MOF.
Rajat Saha, Alejandro Cortés‐Villena, Silvia Gómez‐Coca, Alberto Fernández‐Alarcón, Joaquín Calbo, Raquel E. Galian, Enrique Ortí, Eliseo Ruiz, Mónica Giménez‐Marqués, Samia Benmansour, Carlos J. Gómez‐García   +10 more
wiley   +1 more source

Una reacción multicomponente verde en el laboratorio de química orgánica

Educación Química, 2018
En este siglo, los químicos se han encontrado con un nuevo desafío: producir de manera eficiente los materiales necesarios para mantener la calidad de vida de los seres vivos, reduciendo los efectos negativos sobre el medio ambiente y la salud humana. En
Mariana Ingold, Rosina Dapueto, Gloria V. Lopez, Williams Porca   +3 more
doaj   +1 more source

Continuous‐Flow Microfluidic Synthesis Enhances C2+ Selectivity for Cu2O Catalysts

Advanced Science, EarlyView.
Microfluidic devices are used to prepare Cu2O nanoparticles under laminar flow conditions, which exhibit enhanced selectivity in the CO2‐to‐C2+ reaction due to their nanoporosity and high defect concentration. Cu2O prepared using standard solution methods displays decreased CO2‐to‐C2+ selectivity due to the absence of similar properties. Altogether, we
Carlota Casas, Anh Tuan Ngo, João Pedro Vale, Ona Falcó, Gerard Martí, Mohamed Amazian, Júlia Mayans, Sònia Estradé, Marcos Gil‐Sepulcre, Teresa Andreu, Francesca Peiró, Tiago Sotto Mayor, Lluís Yedra, Jordi García‐Antón, Josep Puigmartí‐Luis, Xavier Sala, Roc Matheu   +16 more
wiley   +1 more source