Results 81 to 90 of about 22,513 (255)

An Efficient Synthesis and Reactions of Novel Indol-ylpyridazinone Derivatives with Expected Biological Activity

Molecules, 2007
Reaction of 4-anthracen-9-yl-4-oxo-but-2-enoic acid (1) with indole gave the corresponding butanoic acid 2. Cyclocondensation of 2 with hydrazine hydrate, phenyl hydrazine, semicarbazide and thiosemicarbazide gave the pyridazinone derivatives 3a-d ...
Samar A. Abubshait
doaj   +1 more source

Overcrowded Alkene Photo‐Redox‐Switches Based on Quinolinium/Carbene Building Blocks

Angewandte Chemie International Edition, EarlyView.
A modular synthesis of a new class of photo‐ and redox‐switches is described based on the combination of quinolinium salts and carbenes. Photochemical switching allows to selectively switch between folded E/Z isomers, while electrochemical switching allows to change between neutral, radical cation and dicationic oxidation states, which are all isolable
Chris Burdenski, Patrick W. Antoni, Marcel E. Baumert, Leonie Ziemann, Samaresh C. Sau, Julian J. Holstein, Maria Castro, Nitin Kumar, Ofer Filiba, Igor Schapiro, Max M. Hansmann   +10 more
wiley   +1 more source

Anthracene and Anthraquinone [PDF]

Nature, 1921
THE history of anthracene is long and vivid. Discovered amongst the products of coal-tar distillation in 1832, the hydrocarbon played a modest and somewhat commonplace part in the development of structural theory, suddenly blossoming into prominence in 1868, when it was found that alizarin, the twin monarch with indigo of natural colouring matters, is ...
openaire   +2 more sources

Construction of Lean Coal Molecular Structure Model Based on Spectroscopic Characterization

Asia-Pacific Journal of Chemical Engineering, EarlyView.
ABSTRACT The chemical structure of coal exerts a profound influence on its properties and utilization pathways. A comprehensive analysis of coal's molecular structure is crucial for mitigating environmental pollution arising from coal combustion and improving the efficiency of coal utilization.
Song Liu, Hao Xia, Tao Ge, Yaling Bai, Shoulan Wang, Yunfang Liu   +5 more
wiley   +1 more source

An Anthracene-Based Hg²⁺ Fluorescent Probe with Dithioacetal: Simple Synthesis, High Selectivity and Sensitivity, and Dual-Mode Detection Capability

Molecules
With the development of the chemical industry, the threat of mercury pollution to human health is increasing. Therefore, it is necessary to develop a low-cost, convenient and efficient Hg2+ detection method.
Hongli Ren, Qiang Yan
doaj   +1 more source

Catalytic Pyrolysis of Waste Polystyrene Over Fe–B Composite Catalyst for Enhanced Liquid Fuel Production

Asia-Pacific Journal of Chemical Engineering, EarlyView.
ABSTRACT Healthcare derived polystyrene waste represents a growing and under addressed fraction of plastic waste streams due to contamination risks and limited recyclability. This study aims to investigate the valorization of waste polystyrene foam through catalytic and noncatalytic pyrolysis pathways to evaluate product yield distribution and identify
Salman Khan, Zahid Hussain, Bilal Ahmad, Naveed Ahmad, Shohreh Azizi   +4 more
wiley   +1 more source

Conjugated Conductive Polymer Binders for Lithium Batteries: Structural Engineering and Design Principles

Carbon Energy, EarlyView.
Structural engineering of conjugated conductive polymer binders enables integrated electronic transport, strong adhesion, and stable electrode interfaces, offering a promising strategy to reduce inactive components and improve the performance of high‐energy lithium batteries.
Fating Wang, Fei Lv, Jingjing Guo, Min Hong, Xia Wang, Xiaohan Cai, Tiefeng Liu, Jun Lu   +7 more
wiley   +1 more source

Double Anthracene‐Based Sensitizers for High‐Efficiency Dye‐Sensitized Solar Cells under Both Sunlight and Indoor Light

Small Structures
The development of photosensitizers with extended π‐conjugation and spectral matching to sunlight and fluorescent light is crucial for achieving high power conversion efficiency (PCE) in dye‐sensitized solar cells (DSSCs). This study presents a series of
Faraghally A. Faraghally, Ahmed Fouad Musa, Ching‐Chin Chen, Yu‐Hsuan Chen, Yan‐Da Chen, Chen‐Yu Yeh, Tzu‐Chien Wei   +6 more
doaj   +1 more source

Shedding Light on Synthetic Autocatalysis: From Conventional Closed‐Shell Chemistries to Overlooked Open‐Shell Occurrences

Chemistry – A European Journal, EarlyView.
Why add another catalyst when the product itself holds the power to catalyze its own formation? Autocatalysis in synthetic chemistry enhances reaction efficiency and uncovers novel catalytic behavior across both closed‐shell and open‐shell systems, expanding reactivity and enabling innovative design strategies.
Jaspreet Kaur, Joshua P. Barham
wiley   +1 more source

Polarity on Demand: Nucleophilic, Electrophilic, and Ambiphilic Reactivity at a 9,10‐Dihydro‐9,10‐Disilaanthracene Platform

Chemistry – A European Journal, EarlyView.
A 9,10‐dihydro‐9,10‐disilaanthracene platform was efficiently synthesized and features intrinsically electrophilic Si sites. Upon stepwise reductive Si─H bond cleavage, these Si sites are converted into nucleophilic centers. This controlled polarity switching also enables ambiphilic reactivity within a homo‐heteroelement framework.
Moritz Schmidt, Alexander Virovets, Eugenia Peresypkina, Hans‐Wolfram Lerner, Matthias Wagner   +4 more
wiley   +1 more source