Results 201 to 210 of about 18,824 (262)

Electrocatalytic C─N Coupling in Aqueous Solutions for High‐Value Product Synthesis

Angewandte Chemie, EarlyView.
Electrocatalytic C–N coupling offers a sustainable route to synthesize crucial organic nitrogen compounds from abundant feedstocks under mild conditions. This review examines recent progress in overcoming key challenges, like slow kinetics and competing reactions through advanced catalysts and novel mechanisms, paving the way for transforming chemical ...
Yunpeng Zuo, Dongxue Yu, Xiaoran Zhang, Xin Wang   +3 more
wiley   +1 more source

A Novel Acetylcholine Nanosensor for Single Vesicle Storage and Sub‐Quantal Exocytosis in Living Neurons and Organoids

Angewandte Chemie, EarlyView.
Schematic representation of M@E@CF nanosensors for detecting vesicular storage and release in cholinergic neurons and brain organoids. (A) Nano‐tip microelectrodes modification via molds fabricated through 3D printing. (B) the reaction mechanism for acetylcholine detection at the electrode interface.
Wanying Zhu, Yufan Zhang, Hanwen Yu, Da Wang, Xinyue Zhang, Xiaowen Du, Shanshan Wu, Bingzhi Li, Yizhou Zhang, Hongliang Xin, Xing Guo, Yan Liu   +11 more
wiley   +1 more source

From Microscale to Nanoscale Shadow Electrochemiluminescence Microscopy

Angewandte Chemie, EarlyView.
In this research we report on the label‐free shadow electrochemiluminescence (shadow ECL) microscopy of microscale and nanoscale objects. By systematically investigating various influencing factors—including optical configuration, electrode activity, frame averaging, exposure time, and particle arrangement—we further confirm the nano‐imaging potential ...
Xiaodan Gou, Hanna Manko, Jasmina Vidic, Laurent Cognet, Jun‐Jie Zhu, Neso Sojic   +5 more
wiley   +1 more source

Phototriggered Morphological and Compositional Change of UGGAA Repeat RNA Foci by Photoswitchable RNA‐Binding Ligand

Angewandte Chemie, EarlyView.
We here developed a molecular tool for the optical control of UGGAA repeat RNA foci, a pathological hallmark of spinocerebellar ataxia type 31 (SCA31). The photoswitchable RNA‐binding ligand enabled reversible control of the RNA foci. UV irradiation induced the growth of the RNA foci, while subsequent visible light irradiation dissolved the structure ...
Yusuke Fujiwara, Tomonori Shibata, Chikara Dohno   +2 more
wiley   +1 more source

High Spin Iron–Phosphinidene and Arsinidene Complexes With Attenuated Metal–Ligand Multiple Bond Character

Angewandte Chemie, EarlyView.
Unusually low metal–ligand bond orders are observed in high spin iron(II) pnictogenidene (PH2– and AsH2–) complexes. Electronic structure analysis provides evidence for multiconfigurational character that attenuates the metal–ligand multiple bond character normally that is typically associated with pnictogenidene ligands. These complexes can be used to
Austin D. Chivington, Álvaro García‐Romero, David C. Meier, Maren Pink, Jose M. Goicoechea, Jeremy M. Smith   +5 more
wiley   +1 more source

Chemical Upcycling of Nitrile Butadiene Rubbers to Polyamines and Polyols by Chemoselective Catalytic Hydrogenation

Angewandte Chemie, EarlyView.
We demonstrate here the transformation of NBR (Nitrile butadiene rubber) including post‐consumer waste sourced from nitrile gloves and o‐rings into polyamines and polyols via ruthenium catalyzed hydrogenation. ABSTRACT We report here two new approaches for the chemical recycling/upcycling of nitrile butadiene rubber (NBR) to make either polyamines or ...
Alejandra Sophia Lozano Perez, Raymundo Marcial‐Hernandez, Harini Sampathkumar, Oluchi Emenike, Ketan Pancholi, Claire N. Brodie, Daniel M. Dawson, Amit Kumar   +7 more
wiley   +1 more source

Aryl and Alkyl Radiotrifluoromethylation via Metallaphotoredox‐Mediated Radical Cross‐Coupling

Angewandte Chemie, EarlyView.
The metallaphotoredox‐mediated radiotrifluoromethylation of arenes and alkanes is described. The operationally simple protocols make use of substrates bearing thianthrenium salts (TT) or N‐hydroxyphthalimide (NHPI) esters and CF218FI. The reaction proceeds through a Ru‐mediated radical formation followed by a Cu‐mediated radical cross‐coupling step and
Lukas Veth, Albert D. Windhorst, Danielle J. Vugts   +2 more
wiley   +1 more source

Bridged Pyrroloindole‐CAYC‐Gold Complexes: Harnessing Weak Secondary Intramolecular Au···H−C(sp3) Interactions in Gold(I) Catalysis

Angewandte Chemie, EarlyView.
We present a new class of electronically and sterically hindered N‐heterocyclic carbenes, referred to as bridged cyclic (amino)ylide carbene (bCAYC), where 9H‐pyrrolo[1,2‐a]indole acted as carbene core and diaryl sulfonium as ylide partner. Corresponding bCAYC‐Au(I) exhibits a weak secondary intramolecular Au···H−C(sp3) interaction as a secondary ...
Sourav Sekhar Bera, Anurag Kumar, Pengcheng Gao, Sanghamitra Das, Roger Lalancette, Roman Szostak, Michal Szostak   +6 more
wiley   +1 more source

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Ruthenium maltolato complexes

Chemical Communications, 1997
Two maltol molecules can be deprotonated and coordinated to Ru II to generate a series of octahedral complexes having the general formula Ru(ma) 2 L 2 (ma = C 6 H 5 O 3 ; L = PPh 3 , Me 2 SO; L 2 = cycloocta-1,5-diene); when L = PPh 3 , a precursor for the dimerization of phenylacetylene is obtained.
Michael D. Fryzuk, Michael J. Jonker, Steven J. Rettig   +2 more
openaire   +1 more source

Fluorocarbon ruthenium complexes

Journal of the Chemical Society A: Inorganic, Physical, Theoretical, 1969
Hexafluoroacetone and 1,1-dicyano-2,2-bis(trifluoromethyl)ethylene both displace carbon monoxide from the ruthenium(0) complex (CO)3[EtC(CH2O)3P]2Ru to form (CO)2[EtC(CH2O)3P]2Ru[(CF3)2CO] and (CO)2[EtC(CH2O)3P]2Ru[(CF3)2CC(CN)2] respectively, in which the CO ligands occupy a relative trans-configuration.
M. Cooke, M. Green
openaire   +1 more source