Results 101 to 110 of about 68,808 (283)

Hydrotris(3-mesitylpyrazolyl)borato-copper(i) alkyne complexes: synthesis, structural characterization and rationalization of their activities as alkyne cyclopropenation catalysts [PDF]

, 2012
The use of the bulky hydrotris(3-mesitylpyrazolyl)borate anionic ligand has allowed the synthesis of stable TpMsCu(alkyne) complexes (alkyne = 1-hexyne, 1, phenylacetylene, 2, and ethyl propiolate, 3).
Rodríguez Belderraín, Tomás, Álvarez, Eleuterio, Pérez Romero, Pedro José, Martín Gandul, Carmen, Sierra, Marta   +4 more
core   +1 more source

Bidirectional Soft Catalysts for Improved Power Performance of Li‐S Batteries

Advanced Science, EarlyView.
A soft polymer‐metal catalyst is integrated into the binder to create a catalytically active microenvironment that accelerates bidirectional sulfur redox kinetics in lithium‐sulfur batteries. A model polyvinyl alcohol‐Cu catalyst enables high areal capacities at demanding current densities and stable cycling in pouch‐cell prototypes at 0.5 C, achieving
Maleesha M. Nishshanke, Petar Jovanovic, Swarit Dwivedi, Declan McNamara, Akshat Tanksale, Mahdokht Shaibani, Matthew Hill, Mainak Majumder   +7 more
wiley   +1 more source

Nanographene and Graphene Nanoribbon Synthesis via Alkyne Benzannulations

Molecules, 2018
The extension of π-conjugation of polycyclic aromatic hydrocarbons (PAHs) via alkyne benzannulation reactions has become an increasingly utilized tool over the past few years.
Amber D. Senese, Wesley A. Chalifoux
doaj   +1 more source

SynNotch Receptors for Visualizing Immunoreceptor Force Transmission and Downstream Signaling In Vivo

Advanced Science, EarlyView.
A mechanically activated SynNotch reporter platform enables detection of force transmission through receptors as they mediate immune cell interactions. Targeting CD40 on B cells and TCR on T cells records force‐induced reporter activation across 2D coculture, 3D organoid, and implanted in mice, which also reveal force‐amplification of immune receptor ...
Menglan Li, Jintian Lyu, Kaitao Li, Ameya Dravid, Deepali Balasubramani, Amir H. K. Ashkezari, Hyun‐Kyu Choi, Gabriel A. Kwong, Ankur Singh, Cheng Zhu   +9 more
wiley   +1 more source

Stoichiometric Alkyne Metathesis at Metal Cluster Compounds: Interconversion of Os3W Alkyne–alkylidyne and Dimetallaallyl Clusters

, 2014
[[abstract]]Treatment of Os3(CO)10(C2Me2) with CpW-(CO)2(=CTol) produced the alkylidyne-alkyne cluster CpWOs3(CO)10(mu3-CMe)(CMeCTol) (2) and the dimetalloallyl complex CpWOs3(CO)9[C(Me)C(Me)C(Tol)] (3) in sequence. Thermolysis of 3 induced the selective
Kuo, M. T.;Hwang, D. K.;Liu, C. S.;Chi, Y.;Peng, S. M.;Lee, G. H.
core   +2 more sources

Magnetic Water Cleaning of Estrogens via Tight yet Dynamic Binding to Nanoparticles

Advanced Science, EarlyView.
Micropollution is one of the big challenges humanity faces with estrogen hormones being emerging pollutants of concern. Here, a supramolecular design strategy is presented that generates a simple nano‐adsorbent material to magnetically remove low‐concentrated estrogens from water.
Lukas Müller, Philip Maier, Dustin Vivod, Wenke Müller, Nikolaj Lopatik, Theresa Maria Schichtl, Julia Fröhlich, Irene Kraus, Marten Huck, Wieland Corts, Clodomiro Cafolla, Lukas Ruhm, Henrik Gaß, Johannes Voß, Jiwon Byun, Linda Rockmann, Guido Grundmeier, Kislon Voïtchovsky, Hans‐Georg Steinrück, Erdmann Spiecker, Sevim Dalabasmaz, Monika Pischetsrieder, Eike Brunner, Ralf Schweins, Dirk Zahn, Marcus Halik   +25 more
wiley   +1 more source

NHC‐Au‐Catalyzed Isomerization of Propargylic B(MIDA)s to Allenes and Double Isomerization of Alkynes to 1,3‐Dienes

Advanced Science
The synthesis of allenyl boronates is an important yet challenging topic in organic synthesis. Reported herein is an NHC‐gold‐catalyzed 1,3‐H shift toward allenyl boronates synthesis from simple propargylic B(MIDA)s.
Li‐Cai Liu, Shuang Lin, Kangwei Xu, Jiasheng Qian, Ruibo Wu, Qingjiang Li, Honggen Wang   +6 more
doaj   +1 more source

Dual Nickel/Photoredox‐Catalyzed Regio‐ and Enantioselective Alkenylation of Epoxides

Advanced Science, EarlyView.
Ni/photoredox‐catalyzed stereoconvergent cross‐electrophile coupling of racemic epoxides with alkenyl bromides is described, affording β‐alkenyl products with up to 95% ee, excellent E‐selectivity, and complete regiocontrol. These versatile intermediates enable diverse chiral synthons; mechanistic studies suggest a halide ring‐opening followed by ...
Hongyan Lan, Shengzhou Jin, Zhao‐Dong Xu, Guigen Li, Dingyi Wang   +4 more
wiley   +1 more source

Targeting the PHB2–ACSL3 Lipid‐Remodeling Axis Overcomes Cisplatin Resistance by Restoring Ferroptosis in Gastric Cancer

Advanced Science, EarlyView.
ABSTRACT Platinum‐based chemotherapy resistance remains a major obstacle in gastric cancer (GC) treatment. Through integrated transcriptomic profiling of cisplatin‐resistant xenografts and pharmacogenomic interrogation of the NCI‐60 dataset, we identified Prohibitin‐2 (PHB2) as a previously unrecognized determinant of chemoresistance.
Liang Xu, Wanying Xiang, Xinyue Wang, Yue Pan, Jing Gao, Jiezhen Yang, Yufei Wang, Zhipu Zhu, Man Tong, Lei Jin, Yan Ye   +10 more
wiley   +1 more source

Site-Specific Protein Bioconjugation Through Cellular Incorporation of Noncanonical Amino Acids. [PDF]

Angew Chem Int Ed Engl
Genetic code expansion (GCE) enables site‐specific installation of noncanonical amino acids containing bioorthogonal conjugation handles, allowing precise, homogeneous protein modification. This review examines the principles of orthogonal translation, surveys the chemistries available for chemoselective labeling, and highlights emerging multi‐site ...
Sarkar R, Joshi M, Chatterjee A.
europepmc   +3 more sources