Results 101 to 110 of about 37,689 (286)

Synthesis and Therapeutic activity of some new piperazine Derivatives

, 2010
Not ...
Savaliya, Mahendra D.
core  

A Novel Workflow for Fast Elucidation of Drug Metabolites for Screening—Combining In Silico Metabolite Prediction With Trapped Ion Mobility QTOF‐MS

Drug Testing and Analysis, EarlyView.
UHPLC‐timsTOF‐MS with in silico prediction and automated annotation enabled rapid identification of quetiapine metabolites from pHLMs, facilitating their inclusion in targeted LC‐QTOF‐MS urine screening and improving biomarker detection for toxicological applications.
Annette Zschiesche, Birgit Schneider, Ilona Nordhorn, Carsten Baessmann, Laura M. Huppertz, Jürgen Kempf   +5 more
wiley   +1 more source

Piperazines for peptide carboxyl group derivatization: effect of derivatization reagents and properties of peptides on signal enhancement in matrix-assisted laser desorption ionization mass spectrometry

, 2011
Piperazines for peptide carboxyl group derivatization: effect of derivatization reagents and properties of peptides on signal enhancement in matrix-assisted laser desorption/ionization mass ...
梁振, 张玉奎, 杨开广, 乔晓强, 陈令凡, 周愿, 孙良亮, 张丽华   +7 more
core  

Complete Regioselective Addition of Grignard Reagents to Pyrazine N-Oxides, Toward an Efficient Enantioselective Synthesis of Substituted Piperazines

, 2016
A conceptually new one-pot strategy for the synthesis of protected substituted piperazines via the addition of Grignard reagents to pyrazine N-oxides is presented. This strategy is high yielding (33−91% over three steps), step-efficient, and fast.
Roger Olsson (1399453), Hans Andersson (2007136), Fredrik Almqvist (698391), Thomas Sainte-Luce Banchelin (2007142), Magnus Gustafsson (2290414), Sajal Das (805163)   +5 more
core   +1 more source

Chemically Modular, Nonfluorinated Polymer Adsorbents for Capturing Per‐ and Polyfluoroalkyl Substances (PFAS)

ENERGY &ENVIRONMENTAL MATERIALS, EarlyView.
Nonfluorinated polymer networks for PFAS adsorption are synthesized using active ester click chemistry. Incorporating Lewis base ligands along with hydrophilic and hydrophobic co‐monomers leads to high PFOA binding efficiency. Ligand basicity and pH are found to play an important role in PFOA sorption.
Lakshay K. Dhamania, Joshua D. Moon
wiley   +1 more source

Synthesis and antimicrobial activity of carbonyl pyridoquinolones containing urea and piperazine residue

Journal of Saudi Chemical Society, 2010
In the present work, carbonyl pyridoquinolones 8–33 were synthesized and their ability to inhibit gram-positive stains Bacillus subtilis and Staphylococcus aureus, gram-negative stains Escherichia coli and Pseudomonas aeruginosa, and fungi Candida ...
Navin B. Patel, Jaymin C. Patel, Sandip H. Modi   +2 more
doaj   +1 more source

Enhanced Electron‐Capturing by Single‐Atomic Iron on Pyridinic N‐Deficient Carbon Drives Self‐Oxidative Degradation of Pollutants

ENERGY &ENVIRONMENTAL MATERIALS, EarlyView.
Pyrolysis of FeOx/g‐C3N4 and ZIF‐8 is performed to introduce Fe single atom and pyridinic nitrogen vacancies onto N‐doped carbon. This modification enables the materials to efficiently extract electrons from ciprofloxacin (CIP) and activate dissolved oxygen. 100% of CIP was degraded within 1 min without adding any oxidant.
Jianyang Gao, Ruonan Wang, Haifeng Lin, Jun Xing, Jixiang Xu, Lei Wang   +5 more
wiley   +1 more source

A Practical Synthesis of Differentially Protected 2-(Hydroxymethyl)piperazines

, 2016
An efficient and scalable synthesis of three differentially protected 2-(hydroxymethyl)piperazines is presented, starting from optically active and commercially available (2S)-piperazine-2-carboxylic acid dihydrochloride.
Hongwu Gao (2471113), Adam R. Renslo (114387)   +1 more
core   +1 more source

MC19 (M = B, Si, Al and Ga) fullerenes: Adsorption mechanisms of 1,4-diformylpiperazine

Adsorption Science & Technology, 2018
Fullerenes and piperazines have been investigated, particularly, in the field of nanoscience and medicinal chemistry. In the present research, besides discussing structural and electronic properties, the most probable interaction mechanisms between C20 ...
Özgür Alver, Cemal Parlak, Ponnadurai Ramasami   +2 more
doaj   +1 more source

Lead‐free halide perovskites for efficient light‐emitting devices

FlexMat, EarlyView.
Overview of Lead‐free metal halide perovskites with different categories and optoelectronic application directions, including solid‐state lighting, light‐emitting diodes, piezoluminescence, flexible electronics, scintillators and CPL emitters. Abstract Lead halide perovskites exhibit promising optoelectronic properties for optoelectronic applications ...
Yueqi Shen, Kefan Meng, Yiqi Zhao, Chaoran Zhou, Jiaye Shu, Di Zhang, Chengqian Cao, Wanxin Chen, Yefeng Zhou, Weihua Ning   +9 more
wiley   +1 more source