Results 111 to 120 of about 1,636,826 (281)

Atroposelective Pd(0)‐Catalyzed Direct Intermolecular C─H Arylation of Thiazole N‐Oxides Provides Access to Heterobiaryls

Angewandte Chemie, EarlyView.
An enantioselective Pd(0)‐catalysed arylation at the C4‐position of thiazole N‐oxides directly forges the atropochiral heterobiaryl axis. A tailored point‐ and axially chiral monodentate phosphine ensures high reactivities along with a tight stereocontrol.
Vitalii Smal, Nicolai Cramer
wiley   +2 more sources

A Fluorine‐Free, Low Ion Pair Electrolyte for Transition Metal‐Free and Halogen‐Free Sodium Batteries

Advanced Energy Materials, EarlyView.
Fluorine‐containing electrolytes dominate modern rechargeable batteries, yet the fundamental design principles for fluorine‐free systems remain largely unexplored. We demonstrate that fluorine‐free electrolyte chemistry can simultaneously achieve long cycle life, fast charging, and stable interphase formation in sodium‐ion batteries.
Dawei Xia, Pengcheng Li, He Zhou, Xu Feng, Dennis Nordlund, Weibo Huang, Ge Li, Feng Lin   +7 more
wiley   +1 more source

Polycyclic Spiro Lignans and Biphenyl Tetrahydrofuranone Lignans from Gymnotheca involucrata

, 2016
Four rare polycyclic spiro lignans (1-4) and four new biphenyl tetrahydrofuranone lignans (5-8) were isolated from the whole plant of Gymnotheca involucrata.
Xia, B, Gu, YC, Xiao, SJ, Zhou, Y (reprint author), Chinese Acad Sci, Chengdu Inst Biol, Key Lab Mt Ecol Restorat & Bioresource Utilizat, 9 Sect 4,Renmin Nan Rd, Chengdu 610041, Peoples R China., Ding, LS, Zhou, Y, Guo, DL, Allen, S, Chen, F   +8 more
core   +1 more source

Radical, Not Ionic: The Mechanochemical Zincke Nitration of Phenols

Angewandte Chemie, EarlyView.
Mechanochemistry recasts the classical Zincke nitration as an open‐shell process. Liquid‐assisted vibrational milling of phenols with in situ HNO2 delivers direct and ipso nitration across 50 substrates, while atmosphere, NOx‐transfer, EPR and DFT evidence expose a phenoxyl‐radical/NO2 manifold underlying this historically ionic transformation ...
Roberto Scipione, Francesco Basoccu, Pietro Caboni, Francesca Sardu, Enrico Podda, Marco Lucarini, Massimiliano Arca, Andrea Porcheddu   +7 more
wiley   +2 more sources

1,2‐Bis(boronate) Arenes by Borylation Directed Borylation

Angewandte Chemie, EarlyView.
Boron electrophiles derived from tetrabromo‐pyrazaboles and AlCl3 affect the regioselective vicinal double C–H borylation of a range of arenes and polycyclic aromatic hydrocarbons (PAHs). A subsequent pinacol installation step then affords the vicinal bis‐boronate ester‐substituted arene/PAH.
Anna V. Schellbach, Mathew J. Cross, Emily Noone, Cate S. Anstöter, Michael J. Ingleson   +4 more
wiley   +2 more sources

PCN‐700: A Model Platform for Crystallographic Probing of Coordination Behavior in Metal–Organic Frameworks

Angewandte Chemie, EarlyView.
Linker installation in PCN‐700 provides a unique platform for precisely modulating coordination environments within a crystalline framework. By enabling controlled incorporation of diverse linkers while maintaining structural integrity, PCN‐700 offers new opportunities to unravel the fundamental principles governing coordination chemistry, including ...
Zongsu Han, Jiatong Huo, Hong‐Cai Zhou
wiley   +2 more sources

Fluorene‐Framework Engineering Enables Narrowband Red Multi‐Resonance Emitters for High‐Efficiency With Negligible Roll‐Off Toward BT.2020

Angewandte Chemie, EarlyView.
σ‐Decoupled C9 fluorene‐framework topology control enables narrowband red MR emitters. SF‐BNO and PF‐BNO share the same BNO core, but differ in closed/open fluorene ring closure. SF‐BNO improves steric shielding and stability, while PF‐BNO enhances PLQY, orientation, and efficiency. Ex‐PSF and TE‐OLED architectures deliver ultra‐low efficiency roll‐off
Aradhya Rajput, Nisha Vergineya S, Subramanian Muruganantham, Meghana Tirupati, Odugu Pavan Kumar, Jun‐Yun Kim, Mi Young Chae, Jang Hyuk Kwon   +7 more
wiley   +2 more sources

OPTICAL STABILITY IN BIPHENYL, PHENYLPYRIDYL, AND BIPYRIDYL COMPOUNDS

, 1950
Comparable ortho-substituted compounds of the biphenyl, 2-phenylpyridyl, and 2,2′-bipyridyl type have been synthesized and resolved, and the resistance to racemization determined.
J. G. Breckenridge, D. Aziz
core   +1 more source

Vanillin-Derived Multifunctional Agents: Structure-Based Design, Docking, and In Vitro Evaluation of Antitubercular, Anti-Inflammatory, and Antioxidant Activities

Indonesian Journal of Chemistry
Tuberculosis remains a major global health burden, highlighting the urgent need for new therapeutic agents with improved efficacy and safety. In this study, a series of vanillin-derived biphenyl ether analogues inspired by the nimesulide scaffold was ...
Shubha M. R., Veda B. Hacholli, Łukasz Szeleszczuk, Pavitra Anant Hegde, Anushree C. G., Basavaraj H. S., Marcin Gackowski   +6 more
doaj   +1 more source

Discovery of New 1,1′-Biphenyl-4-sulfonamides as Selective Subnanomolar Human Carbonic Anhydrase II Inhibitors

, 2019
We report here the synthesis and human carbonic anhydrases (CA, EC 4.2.1.1) inhibitory properties of a series of 4′-substituted 1,1′-biphenyl-4-sulfonamides incorporating a 2″- or 3″-amino- or carboxyphenyl unit.
Romano Silvestri (39812), Claudiu Trandafir Supuran (7854230), Michela Puxeddu (7854227), Alessio Nocentini (3355211), Marianna Nalli (1549969), Daniela Vullo (818130), Giuseppe La Regina (7854224), Paola Gratteri (1601911)   +7 more
core   +1 more source