Search results for "combinatorial"
showing 10 items of 1208 documents
New approach to condensed pyrid-2-ones
2002
We wish to report a simple procedure for the preparation of 5-substituted-thienopyridin-7-ones and 7-substituted-1,6-naphthyridin-5(6H)-ones, in good yields, from the dianions of 3-methylthiophene-2-carboxylic and 2-methylnicotinic acids on treatment with nitriles. Brun Sanchez, Eva Maria, Eva.M.Brun@uv.es ; Gil Grau, Salvador, Salvador.Gil@uv.es ; Parra Alvarez, Margarita, Margarita.Parra@uv.es
Aryl carbinols as nerve agent probes. Influence of the conjugation on the sensing properties
2012
Two new aryl carbinols (1 and 3) have been synthesised and characterised and their ability as OFF-ON probes for the chromogenic detection of the nerve agent simulant in acetonitrile has been tested. In addition compound 2 has been also studied. The carbinols suffered a phosphorylation reaction followed by an elimination process giving rise to the corresponding carbocations. This transformation of the carbinol into the carbocation is responsible for a significant color change. © The Royal Society of Chemistry and the Centre National de la Recherche Scientifique 2012.
Functionalized Gold Nanoparticles as an Approach to the Direct Colorimetric Detection of DCNP Nerve Agent Simulant
2013
New functionalized gold nanoparticles have been synthesized and their ability to act as colorimetric molecular probes for the naked-eye detection of nerve agent simulant DCNP has been studied. The detection process is based on the com
ChemInform Abstract: Asymmetric Synthesis of Fluorinated Isoindolinones Through Palladium-Catalyzed Carbonylative Amination of Enantioenriched Benzyl…
2015
The asymmetric synthesis of fluorinated isoindolinones has been achieved by a palladium-catalyzed aminocarbonylation reaction of the corresponding α-fluoroalkyl o-iodobenzylamines. A base-mediated anti β-hydride elimination process was suggested to explain the partial erosion of the optical purity observed in some cases. This mechanistic rationale enabled the minimization of this partial racemization by fine-tuning the pKa of the base.
Biorelevant fluorine-containing N-heterocycles
2019
Abstract Over the course of many decades, life sciences have gained an insight into the structure–activity relationship of biologically active molecules, thereby allowing for a deeper understanding of how such molecules can be modified to produce the desired effect within a living organism. The introduction of either a nitrogen-containing heterocycle or a fluorine-containing unit are commonly used strategies in the pharmaceutical and agrochemical industries to fine-tune the activity, toxicity, and metabolic stability, among other properties, of their respective products. Herein, an overview of the latest fluorine containing N-heterocyclic molecules of significant biological importance, eith…
Electrochemical synthesis on boron-doped diamond
2012
Abstract Boron-doped diamond (BDD) is a novel and innovative electrode material. In protic media and particular aqueous electrolytes BDD exhibits a large over potential for the evolution of molecular hydrogen and oxygen. The large chemical window allows a variety of electrochemical conversions to be conducted. The anodic process treatment generates oxyl species directly which are known to be extremely reactive. Usually, the electrochemical mineralization of the organic components in the electrolyte occurs. However, with control of the reactivity of these intermediates the use in electroorganic synthesis can be realized. Until today mostly anodic conversions have been studied at BDD. Since h…
Multistage rocket: integrational design of a prodrug-based siRNA delivery system with sequential release for enhanced antitumor efficacy.
2018
An integrated peptide-camptothecin prodrug (RSC) system was designed as a nano-sized multistage rocket for the efficient complexation and controlled sequential release of siRNA and anticancer drug under tumor-relevant reductive and esterase-enriched conditions, which facilitated the avoidance of negative interactions and maximized the synergistic effect.
ChemInform Abstract: New Indolocarbazoles as Antitumor Active Compounds: Evaluation of the Target by Experimental and Theoretical Studies.
2010
ChemInform Abstract: Selective Dimerization of Tetraurea Calix[4]arenes
2011
ChemInform Abstract: Synthetically Attractive Indolization Processes and Newer Methods for the Preparation of Selectively Substituted Indoles
1988
The synthetically interesting processes available for indolization reactions are discussed and illustrated in tabular form and particular emphasis is placed on the more recent methods.