Results 71 to 80 of about 28,423 (282)

Linker‐Free Covalent DNA Functionalization of Quantum‐Grade Nanodiamonds

Advanced Optical Materials, EarlyView.
Nanodiamond (ND) surface is terminated with azide groups via nucleophilic substitution and decarboxylative azidation. The resulting azidated NDs display high click reactivity while retaining the spin and charge properties of nitrogen‐vacancy centers.
Jakub Copak, Filip Steiner, Ema Fialova, Tomas Matousek, Jan Plutnar, David Chvatil, Michal Gulka, Petr Cigler   +7 more
wiley   +1 more source

Mass-spectrometric fragmentation of sodium 2-(4-methyl-5-(thiophene-2-yl)-4H-1,2,4-triazole-3-ylthio)acetate

Zaporožskij Medicinskij Žurnal, 2015
The study of physical and chemical characteristics and establishing patterns of mass spectrometric fragmentation are the actual tasks of modern pharmaceutical science, have both scientific interest and practical importance. Aim.
V. A. Salionov, B. A. Varynskyi, V. V. Parchenko   +2 more
doaj   +1 more source

Ruthenium‐Catalyzed Azide‐Selenoalkyne Cycloadditions: A Combined Synthetic–Computational Study into Reaction Scope, Mechanism, and Origins of Regioselectivity

Advanced Synthesis &Catalysis, EarlyView.
A ruthenium‐catalyzed azide–alkyne cycloaddition (RuAAC) reaction is reported for the synthesis of selenium‐substituted triazole products. Reaction regioselectivity is dependent on the identity of the non‐selenium substituent of the alkyne, which challenges the perceived understanding of RuAAC regioselectivity.
Frances E. Bugden, Andrew D. Bage, Ashima Bajaj, Bin Wang, Fiona J. Gibson, Henry Stone, Yingjian Xu, Frank De Proft, Mercedes Alonso, Mark D. Greenhalgh   +9 more
wiley   +1 more source

Synthesis, Characterization and Antimicrobial Properties of Schiff Bases Derived from Condensation of 8-Formyl-7-hydroxy-4-methylcoumarin and Substituted Triazole Derivatives

E-Journal of Chemistry, 2009
Two biologically active classes of compounds coumarins and triazoles were employed to form the Schiff bases. The synthesized Schiff base viz., 3-aryl-[(1-isocyano-4-methyl-7-hydroxycoumarin)]-5-methyl-1,3,4-triazoline-2-one and its substituents were ...
Kumar Sanjeev S. Lamani, Oblennavar Kotresh, Mohammed Shafi A. Phaniband, Jagannath C. Kadakol   +3 more
doaj   +1 more source

N‐Containing Carbon Materials in Metal‐Free and Non‐Noble Metal Liquid Phase Heterogenous Catalysis

Advanced Synthesis &Catalysis, EarlyView.
Over 100 examples of non‐noble metal supported on N‐containing and metal‐free N‐containing carbon catalysts are discussed. Particular emphasis is put on how different N‐functionalities influence catalyst performance and stability. Preparation procedures are also examined, with a strong focus on how the heat treatment temperature influences N ...
Fulvio Varamo, Anna Katharina Beine
wiley   +1 more source

Electrocatalytic Dehydrogenative Lactonization of Benzylic Alcohols: A Sustainable Access to Phthalides via N‐hydroxyphthalimide Mediation

Advanced Synthesis &Catalysis, EarlyView.
A mild, scalable electrocatalytic method for direct lactonization of benzylic alcohols to phthalides using N‐hydroxyphthalimide as a redox mediator is reported. This metal‐free process proceeds via a phthalimide‐N‐oxyl‐mediated hydrogen atom transfer mechanism, shows broad scope with good to excellent yields, and enables late‐stage functionalizations ...
Pietro Ronco, Antonia Simi, Enrico Lunghi, Emanuele Casali, Giovanni Lenardon, Alessio Porta, Giuseppe Zanoni   +6 more
wiley   +1 more source

Actoprotective properties of 7'-((3-thio-4-methyl-4H-1,2,4-triazole-5-yl)methyl)theophylline derivatives

Zaporožskij Medicinskij Žurnal, 2016
The aim of this work was the study of actoprotective activity of compounds, which combine sintons of 1,2,4-triazole-3-thiol and theophylline. Materials and methods.
A. S. Gotsulya
doaj  

The search of new biologically active compounds with antibacterial and antifungal activity among 1,2,4-triazole-3-thiol derivatives with the remnants of thiophene

Aktualʹnì Pitannâ Farmacevtičnoï ì Medičnoï Nauki ta Praktiki, 2017
The resistance of microorganisms to antimicrobial and antifungal drugs is still an actual issue in the modern world. Therefore, one of the possible ways to solve this problem is the creation of new drugs.
V. O. Salionov, O. I. Panasenko, Ye. G. Knysh, O. M. Kamyshnyi   +3 more
doaj   +1 more source

Cu(I)‐Catalyzed Interrupted Cycloaddition Between Azides, Ag(I)‐Acetylides, and Diorganoyl Dichalcogenides

Advanced Synthesis &Catalysis, EarlyView.
Unleashing the power of Ag(I)‐acetylides with LiCl/dimethyl sulfoxide (DMSO). The LiCl/DMSO mixture have an unexplored ability to dramatically increase the solubility of Ag(I)‐acetylides regardless of their molecular structure, which is explored to achieve high chemoselectivity in the Cu(I)‐catalyzed interrupted cycloaddition between organic azides, Ag(
Diego Seckler, Eduardo Q. da Luz, Gabriel L. Silvério, Francielli Sousa Santana, Gul Badshah, Wystan K. Teixeira, Caroline R. Montes D’Oca, Ricardo S. Schwab, Daniel S. Rampon   +8 more
wiley   +1 more source

A Polyoxometalate—Carbon Nanotube Enhanced Electrochemical Sensor for Aptamer‐Based Diagnostics

Advanced Sensor Research, EarlyView.
The high electroactive surface area of multi‐walled carbon nanotubes decorated with aptamer‐functionalized polyoxovanadate units enables a ≈1000‐fold increase in peak current response for a model diclofenac detection in aqueous solution compared to unmodified platinum microelectrodes.
Eric Vogelsberg, Andriy Lotnyk, Kirill Monakhov   +2 more
wiley   +1 more source