Results 21 to 30 of about 151,000 (163)

Unexpected = 4 + 2 Cycloaddition through Chromium Non-Heteroatom-Stabilized Alkynyl Carbene Complexes: Regioselective Access to Substituted 6-Azaindoles [PDF]

open access: yes, 2018
This research was supported by the Spanish Government MINECO/FEDER (CTQ-2016-76840-R and CTQ-2017-87372-P (AEI/FEDER, UE)) and the Principality of Asturias, Spain (GRUPIN14 ...
Funes Ardoiz, Ignacio   +3 more
core   +2 more sources

Design and Tuning of Photoswitches for Solar Energy Storage

open access: yesMolecules, 2021
Current energy demand makes it compulsory to explore alternative energy sources beyond fossil fuels. Molecular solar thermal (MOST) systems have been proposed as a suitable technology for the use and storage of solar energy.
Raul Losantos, Diego Sampedro
doaj   +1 more source

Different Patterns of Pd-Promoted C-H Bond Activation in (Z)-4-Hetarylidene-5(4H)-oxazolones and Consequences in Photophysical Properties

open access: yesInorganics
This work aims to amplify the fluorescence of (Z)-4-hetarylidene-5(4H)-oxazolones 1 by suppression of the hula-twist non-radiative deactivation pathway by C^N-orthopalladation of the 4-hetarylidene ring.
Miguel Martínez   +6 more
doaj   +1 more source

Enantioselective Solvent-Free Synthesis of 3-Alkyl-3-hydroxy-2-oxoindoles Catalyzed by Binam-Prolinamides

open access: yesMolecules, 2015
BINAM-prolinamides are very efficient catalyst for the synthesis of non-protected and N-benzyl isatin derivatives by using an aldol reaction between ketones and isatins under solvent-free conditions.
Abraham Bañn-Caballero   +3 more
doaj   +1 more source

Dual Emissive Ir(III) Complexes for Photodynamic Therapy and Bioimaging

open access: yesPharmaceutics, 2021
Photodynamic therapy (PDT) is a cancer treatment still bearing enormous prospects of improvement. Within the toolbox of PDT, developing photosensitizers (PSs) that can specifically reach tumor cells and promote the generation of high concentration of ...
Marta Redrado   +4 more
doaj   +1 more source

Gold(I) Complexes Bearing Alkylated 1,3,5-Triaza-7-phosphaadamantane Ligands as Thermoresponsive Anticancer Agents in Human Colon Cells

open access: yesBiomedicines, 2021
Overheating can affect solubility or lipophilicity, among other properties, of some anticancer drugs. These temperature-dependent changes can improve efficiency and selectivity of the drugs, since they may affect their bioavailability, diffusion through ...
Javier Quero   +5 more
doaj   +1 more source

A new approach for the synthesis of bisindoles through AgOTf as catalyst

open access: yesBeilstein Journal of Organic Chemistry, 2014
A novel approach for the catalyzed formation of bisindolylmethane derivatives (BIMs) is described. This methodology is the unique example where AgOTf has been successfully used for the activation of aldehydes, giving easy access to a broad range of ...
Jorge Beltrá   +2 more
doaj   +1 more source

Attachment of Luminescent Neutral “Pt(pq)(C≡CtBu)” Units to Di and Tri N-Donor Connecting Ligands: Solution Behavior and Photophysical Properties

open access: yesInorganics, 2014
Binuclear derivatives [{Pt(pq)(C≡CtBu)}2(μ-L)] (1a–5a), containing a series of dinitrogen linker ligands and the trinuclear [{Pt(pq)(C≡CtBu)}3(μ-L)] (6a) [L = μ-1,3,5-tris(pyridine-4-ylethynyl)benzene], formed by bridge-splitting reactions with [Pt(pq ...
Elena Lalinde   +3 more
doaj   +1 more source

Visible light-promoted metal-free aerobic photooxidation of xanthenes, thioxanthenes and dihydroacridines in deep eutectic solvents

open access: yesTetrahedron Green Chem, 2023
Benzylic systems such as 9H-xanthenes, 9H-thioxanthenes and 9,10-dihydroacridines can be easily oxidized to the corresponding xanthones, thioxanthones or acridones, respectively, in deep eutectic solvents by a visible blue light-promoted photooxidation ...
Sarah-Jayne Burlingham   +3 more
doaj   +1 more source

Synthesis of block copolymers of PS-b-PMMA employing control radical polymerization [PDF]

open access: yes, 2016
Se estudió la síntesis de copolímeros bloque de poli (estireno) y poli (metil metacrilato) (PSb -PMMA) empleando polimerización radicalaria por transferencia atómica (ATRP). Se realizaron distintos experimentos variando las relaciones molares de monómero,
Ciolino, Andrés Eduardo   +4 more
core  

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