Results 101 to 110 of about 142,060 (347)

Recent Developments in Radical Mediated Synthesis of Organostannanes.

Advanced Synthesis &Catalysis, EarlyView.
Abstract The present review aims to provide an overview of the recent developments in the preparation of aryl‐ or alkenyl stannanes via carbon‐ and tin‐centered radicals enabling chemists to synthesize organostannyl derivatives with high efficiency and under mild conditions.
Qianhang Ren, Adrian Luguera Ruiz, Maurizio Fagnoni, Stefano Protti, Di Qiu   +4 more
wiley   +1 more source

Synthesis and biological investigation of (+)-3-hydroxymethylartemisinin

Beilstein Journal of Organic Chemistry, 2019
Herein, we describe a biomimetic entry to (+)-3-hydroxymethylartemisinin (2) as well as to the artemisinin derivatives (+)-3-hydroxymethyl-9-desmethylartemisinin (16) and (+)-3-hydroxymethyl-9-epi-artemisinin (18), starting from the known and readily ...
Toni Smeilus, Farnoush Mousavizadeh, Johannes Krieger, Xingzhao Tu, Marcel Kaiser, Athanassios Giannis   +5 more
doaj   +1 more source

Polyoxometalate Imide‐Linked Molecules, Covalent Organic Polymers, and Frameworks: Dimensionality Effects on Supercapacitors Performance

Advanced Sustainable Systems, EarlyView.
This study explores polyoxometalate‐based hybrids with varying dimensionalities, linking molecular, polymeric, and framework structures to supercapacitor performance. The results highlight how structural tuning enhances surface area, porosity, and charge transport, offering insights into designing efficient energy storage materials.
Daria Nowicka, Verónica Montes‐García, Aleksandra Sikora, Violetta Patroniak, Adam Gorczyński, Dawid Pakulski, Artur Ciesielski   +6 more
wiley   +1 more source

Access to N‐Monofluoromethylated (Thio)Carbamates, Formamides, Alkynamides, and Related Derivatives

Angewandte Chemie, EarlyView.
The first general synthetic access to N‐CH₂F and N‐CHRF carbamates, thiocarbamates, formamides, alkynamides, and related compounds is disclosed. The method involves the direct synthesis of carbamoyl fluoride building blocks from readily available amines, followed by their derivatization. Abstract This work presents the first general synthetic access to
Filip G. Zivkovic, Fritz Bahns, Che‐Ming Hsu, Franziska Schoenebeck   +3 more
wiley   +2 more sources

Synthesis of 1-azaspiro[4.4]nonan-1-oxyls via intramolecular 1,3-dipolar cycloaddition

Beilstein Journal of Organic Chemistry, 2019
Sterically shielded nitroxides of the pyrrolidine series have shown the highest resistance to reduction. Here we report the synthesis of new pyrrolidine nitroxides from 5,5-dialkyl-1-pyrroline N-oxides via the introduction of a pent-4-enyl group to the ...
Yulia V. Khoroshunova, Denis A. Morozov, Andrey I. Taratayko, Polina D. Gladkikh, Yuri I. Glazachev, Igor A. Kirilyuk   +5 more
doaj   +1 more source

Etherification of Bio‐Based Furanic Compounds via Continuous Flow

Advanced Sustainable Systems, EarlyView.
A comprehensive investigation on the etherification of bio‐based furanic compounds using a continuous flow apparatus. Reaction conditions are optimized for the synthesis of BEMF and then used to obtain a library of BAMFs. Additionally, the self‐etherification of HMF to produce OBMF is explored both in heterogeneous and by employing the homogeneous ...
Davide Dalla Torre, Giacomo Trapasso, Nathan Jourdainne, Nathanael Guigo, Fabio Aricò   +4 more
wiley   +1 more source

Imaging Renal Urea Handling in Rats at Millimeter Resolution using Hyperpolarized Magnetic Resonance Relaxometry [PDF]

arXiv, 2015
\textit{In vivo} spin spin relaxation time ($T_2$) heterogeneity of hyperpolarized \textsuperscript{13}C urea in the rat kidney was investigated. Selective quenching of the vascular hyperpolarized \textsuperscript{13}C signal with a macromolecular relaxation agent revealed that a long-$T_2$ component of the \textsuperscript{13}C urea signal originated ...
arxiv  

Mixed‐Metal Ce‐Zr‐Mn Clusters as Photo‐Catalysts for Decarboxylative Functionalization of Carboxylic Acids

Angewandte Chemie, EarlyView.
Decarboxylative hydrazination of carboxylic acids is achieved using a 1:5:2 ratio of three metal salts, Ce(OtBu)4, Zr(OtBu)4, and Mn(OAc)3, as a catalyst under visible light irradiation, in which single cerium‐incorporated hexanuclear mixed‐metal clusters containing a [CeZr5O4(OH)4]12+ core are formed with association of manganese(II) species.
Sota Tamaki, Riina Kuwata, Shuto Wakita, Yasuko Osakada, Mamoru Fujitsuka, Tetsuro Kusamoto, Kazushi Mashima, Hayato Tsurugi   +7 more
wiley   +2 more sources

(S)-2,2′-Dihydroxy-N,N′-(6-hydroxyhexane-1,5-diyl)dibenzamide

Acta Crystallographica Section E, 2013
In the title compound, C20H24N2O5, the dihedral angle between the two roughly planar salicylamide fragments [r.m.s. deviations = 0.043 (2) and 0.149 (2) Å] is 25.50 (5)°.
Sabine Wilbrand, Christian Neis, Kaspar Hegetschweiler   +2 more
doaj   +1 more source

Natural Toolbox–Chemical Engineering Aspect and High‐Value Applications of Janus Cellulose Nanomaterials

Advanced Science, EarlyView.
The Tai Ji symbol from China represents the co‐existence of two opposite substances, similar to quantum entanglement. The term Janus comes from ancient Roman religion and mythology. Janus, the god of beginnings, transitions, etc., has two faces, symbolizing duality. Janus cellulose nanomaterials show structural duality.
Yu Zhao, Shengjie Wang, Zongchen Wei, Shiming Qiu, Guofu Zhou, Jr‐Hau He, Xuezhu Xu   +6 more
wiley   +1 more source