Results 61 to 70 of about 236,434 (328)

Thiophene-based donor–acceptor co-oligomers by copper-catalyzed 1,3-dipolar cycloaddition

Beilstein Journal of Organic Chemistry, 2012
Herein we present a three-component one-pot procedure to synthesize co-oligomers of a donor–acceptor–donor type, in which thiophene moieties work as donor and 1,2,3-triazoles as acceptor units.
Stefanie Potratz, Amaresh Mishra, Peter Bäuerle   +2 more
doaj   +1 more source

SnAr Reactions of 2,4-Diazidopyrido[3,2-d]pyrimidine and Azide-Tetrazole Equilibrium Studies of the Obtained 5-Substituted Tetrazolo[1,5-a]pyrido[2,3-e]pyrimidines

Molecules, 2022
A straightforward method for the synthesis of 5-substituted tetrazolo[1,5-a]pyrido[2,3-e]pyrimidines from 2,4-diazidopyrido[3,2-d]pyrimidine in SnAr reactions with N-, O-, and S- nucleophiles has been developed.
Kristaps Leškovskis, Anatoly Mishnev, Irina Novosjolova, Māris Turks   +3 more
doaj   +1 more source

Coordinatively unsaturated ruthenium complexes as efficient alkyne-azide cycloaddition catalysts [PDF]

, 2012
The performance of 16-electron ruthenium complexes with the general formula Cp*Ru(L)X (in which L = phosphine or N-heterocyclic carbene ligand; X = Cl or OCH2CF3) was explored in azide−alkyne cycloaddition reactions that afford the 1,2,3- triazole ...
Broggi, Julie, Cavallo, Luigi, Fortman, George C., Lamberti, Marina, Nolan, Steven P., Poater, Albert, Slawin, Alexandra M. Z.   +6 more
core   +2 more sources

Anionic Citrate‐Based 3D‐Printed Scaffolds for Tunable and Sustained Orthobiologic Delivery to Enhance Tissue Regeneration

Advanced Functional Materials, EarlyView.
A potent anionic citric acid‐based 3D‐printed scaffold is developed for the sustained and controlled release of orthobiologics to enhance orthopedic therapeutic efficacy. Comprehensive in vivo studies demonstrated effective bone fusion and high safety at a low dose of BMP‐2 delivered by the system, establishing it as a promising platform for safe ...
Se‐Hwan Lee, Ruqiang Lu, Andrew House, Zizhao Li, Lindsey Hammond Burton, Katie Josephine Sikes, Lynn Marie Pezzanite, Drew William Koch, Kevin Michael Labus, Ben Gadomski, Jeremiah Easley, Richard Tuan Tran, Su Chin Heo   +12 more
wiley   +1 more source

Promising Oxygen- and Nitrogen-Rich Azidonitramino Ether Plasticizers for Energetic Materials

Molecules, 2022
A simple, mild and general method has been developed for the preparation of alkyl nitramines bearing a halogenoalkoxylic moiety. From these reactive halogen intermediates, a few azidoalkoxyl alkyl nitramines have been produced as energetic plasticizers ...
Dmitry B. Vinogradov, Pavel V. Bulatov, Evgeny Yu. Petrov, Pavel S. Gribov, Natalia N. Kondakova, Natalia N. Il’icheva, Evgenia R. Stepanova, Anatoly P. Denisyuk, Vladimir A. Sizov, Valery P. Sinditskii, Aleksei B. Sheremetev   +10 more
doaj   +1 more source

Designer Reagents for Mass Spectrometry-Based Proteomics: Clickable Cross-Linkers for Elucidation of Protein Structures and Interactions [PDF]

, 2012
We present novel homobifunctional amine-reactive clickable cross-linkers (CXLs) for investigation of three-dimensional protein structures and protein–protein interactions (PPIs).
Agnew, Heather D., Beauchamp, J. L., Czerwieniec, Gregg, Deshaies, Raymond J., Graham, Robert L. J., Heath, James R., Hess, Sonja, Lee, J. Eugene, Loo, Joseph A., Smith, Geoffrey T., Sohn, Chang Ho, Sweredoski, Michael J.   +11 more
core   +2 more sources

Organic Azides. 3. Ultrasound Synthesis of Propargyl Azide, Azidoacetonitrile and Primary Allylic Azides. [PDF]

Acta Chemica Scandinavica, 1984
Various applications of ultrasound in heterogeneous reactions have been published.2 This paper describes the direct formation of azides from activated primary organic halides and aqueous sodium azide solution under ultrasonic irradiation D»]. A mixture of the alkyl halide and saturated aqueous sodium azide is irradiated in an Erlenmeyer flask using a ...
Hanno Priebe, Gunner Borch, Synnøve Liaaen-Jensen, Anders Måhlén, Lars Mörch   +4 more
openaire   +2 more sources

Highly Sensitive Electrochemical Biosensor Based on Hairy Particles with Controllable High Enzyme Loading and Activity

Advanced Functional Materials, EarlyView.
For the first time, a highly sensitive electrochemical biosensor based on SiO2‐based hairy particles with a grafted PDMAEMA polymer brush containing a quantifiable and large amount of immobilized Laccase is reported. The fabricated biosensor exhibits a sensitivity of 0.14 A·m⁻¹, a limit of detection (LOD) of 0.1 µm, and a detection range of 0.3–750 µm,
Pavel Milkin, Anila Antony, Hongtao Cai, Antonia Debevc, Ceyda Topal, Anne Linhardt, Alla Synytska, Leonid Ionov   +7 more
wiley   +1 more source

Tandem Cu-catalyzed ketenimine formation and intramolecular nucleophile capture: Synthesis of 1,2-dihydro-2-iminoquinolines from 1-(o-acetamidophenyl)propargyl alcohols

Beilstein Journal of Organic Chemistry, 2014
The copper-catalyzed ketenimine formation reaction of 1-(o-acetamidophenyl)propargyl alcohols with various sulfonyl azides is found to undergo a concomitant intramolecular nucleophile attack to generate 1,2-dihydro-2-iminoquinolines after aromatization ...
Gadi Ranjith Kumar, Yalla Kiran Kumar, Ruchir Kant, Maddi Sridhar Reddy   +3 more
doaj   +1 more source

One-Pot Sequence of Staudinger/aza-Wittig/Castagnoli–Cushman Reactions Provides Facile Access to Novel Natural-like Polycyclic Ring Systems

Molecules, 2022
Realization of the one-pot Staudinger/aza-Wittig/Castagnoli–Cushman reaction sequence for a series of azido aldehydes and homophthalic anhydrides is described. The reaction proceeded at room temperature and delivered novel polyheterocycles related to the
Rodion Lebedev, Dmitry Dar’in, Grigory Kantin, Olga Bakulina, Mikhail Krasavin   +4 more
doaj   +1 more source