Results 121 to 130 of about 15,176 (256)

Reactions between Grignard reagents and heterocyclic N-oxides: Stereoselective synthesis of substituted pyridines, piperidines, and piperazines

, 2011
In this perspective we discuss the recent developments of stereoselective synthesis of substituted pyridines, piperidines, and piperazines from cheap and commercially readily available starting materials.
Roger Olsson, Fredrik Almqvist, Olsson, Roger, Almqvist, Fredrik,, Hans Andersson, Andersson, Hans,   +5 more
core   +1 more source

The continuing significance of chiral agrochemicals

Pest Management Science, Volume 81, Issue 4, Page 1697-1716, April 2025.
In the time frame 2018–2023, around 43% of the 35 chiral agrochemicals introduced to the market (herbicides, fungicides, insecticides, acaricides, and nematicides) contain one or more stereogenic centers in the molecule, and almost 69% of them have been marketed as racemic mixtures of enantiomers or stereoisomers.
Peter Jeschke
wiley   +1 more source

Synthesis, Dynamic NMR Characterization, and XRD Study of 2,4-Difluorobenzoyl-Substituted Piperazines

Chemistry
Five different 2,4-difluorobenzamide derivatives were synthesized and fully characterized by 1H/13C/19F/2D NMR spectroscopy using DMSO-d6 as solvent and MS.
Martin Köckerling, Constantin Mamat
doaj   +1 more source

Synthesis, Biological, and Computational Evaluation of Substituted 1-(2-Methoxyphenyl)-4-(1-phenethylpiperidin-4-yl)piperazines and 1-(2-Methoxyphenyl)-4-[(1-phenethylpiperidin-4-yl)methyl]piperazines as Dopaminergic Ligands

, 2016
Sixteen new 1-(2-methoxyphenyl)-4-(1-phenethylpiperidin-4-yl)piperazines and 1-(2-methoxyphenyl)-4-[(1-phenethylpiperidin-4-yl)methyl]piperazines were synthesized to be used as probes for mapping the dopamine D-2 receptor (D(2)DAR) arylpiperazine binding
Kostić-Rajačić, Slađana, Andrić, Deana, Vladimir V. Šukalović, Deana B. Andrić, Penjišević, Jelena, Jelena Z. Penjišević, Roglić, Goran, Kostić Rajačić, Slađana, Šukalović, Vladimir, Vukić Šoškić, Goran M. Roglić, Šoškić, Vukić, Slađana V. Kostić‐Rajačić   +12 more
core   +1 more source

Efficient water‐soluble blue/red‐emissive carbon dots matching plant absorption spectra: Synthesis, tunable control, and their applications in promoting plant growth

Responsive Materials, EarlyView.
Guided by the spectral demand of plant photosystems, this review summarizes the synthesis, emission regulation, dual‐emission design, and gram‐scale production of CDs for agricultural applications. Spectrally matched blue‐ and red‐emissive CDs enhance plant light utilization by converting underutilized light into photosynthetically active radiation and
Yijing Chen, Ziyue Mu, Haoran Zhang, Xuejie Zhang, Wei Li, Bingfu Lei   +5 more
wiley   +1 more source

Synthesis of Some New 1-[2-(alkylthio-1-benzyl-5-imidazolyl) carbonyl]-4-[3-(isopropylamino)-2-pyridyl] piperazines as Anti-HIV [PDF]

Journal of Sciences, Islamic Republic of Iran, 2004
A few analogues of atevirdine or 1-[(5-methoxyindol-2-yl) carbonyl]-4-[3- (ethylamino)-2-pyridyl] piperazine – an anti-HIV belonging to non-nucleoside reverse transcriptase inhibitors were synthesized and evaluated for anti-HIV activity.
doaj  

Three-Component One-Pot Reactions of 2-Trifluoromethyl-N-nosylaziridine, Primary Amines, and Vinylsulfonium Salts for Convenient Access to CF3-Containing Piperazines

, 2017
Trifluoromethylated piperazines were readily synthesized with excellent regioselectivity in high yields by the sequential reaction of 2-trifluoromethylated N-nosylaziridine (2-CF3-N-Ns-aziridine) with various primary amines, followed by treatment with ...
Akiko Irie, Takeshi Hanamoto, Kensuke Hirotaki, Yuki Nakamura   +3 more
core   +1 more source

Mixed TiO2–SiO2 thin coatings for selective adsorption and sunlight‐powered photodegradation of cationic pollutants

Responsive Materials, EarlyView.
Environmental pollution and water scarcity demand innovative purification methods. This study presents a sol‐gel approach to fabricate mixed silica–titania thin films joining photocatalytic activity with selective sorption capability. The films exhibit higher surface area, enhanced degradation of cationic and improved performance over bare titania ...
Andrea Lanfranchi, Simone Bertucci, Margherita Peragallo, Fabiano Martorelli, Giovanni Manfredi, Davide Avanzino, Roberto Spotorno, Stefano Alberti, Davide Comoretto, Francesco Di Stasio, Maddalena Patrini, Federico Locardi, Mirko Prato, Paola Lova   +13 more
wiley   +1 more source

Scalable Synthesis of Piperazines Enabled by Visible‐Light Irradiation and Aluminum Organometallics

, 2015
The development of more active C-H oxidation catalysts has inspired a rapid, scalable, and stereoselective assembly of multifunctional piperazines through a [3+3] coupling of azomethine ylides.
Colas, Kilian,, Samuel Suárez‐Pantiga, Suárez-Pantiga, Samuel,, Johansson, Magnus J., Magnus J. Johansson, Abraham Mendoza, Kilian Colas, Mendoza, Abraham,   +7 more
core   +1 more source

Surface‐Functionalized Poly(2‐Oxazoline)‐Based Grids Produced by Two‐Photon Polymerization as 3D‐Structured Hydrogels Promoting Cell Adhesion

Small, EarlyView.
Sidechain‐functionalized poly(2‐oxazoline) cross‐linkers were utilized to print grids with varying mesh sizes by two‐photon polymerization (2PP grids). The amino‐functionalized hydrogels were subsequently used to covalently couple the RGD‐containing peptide sequence GCWRGDSP (RGD) to the amino groups in the side chains. In cell adhesion tests with L929
Tim Hoffmann, David Pretzel, Steffi Stumpf, Lena‐Marie Kaspar, Florian Behrendt, Christiane Höppener, Aaron Reupert, Volker Deckert, Lothar Wondraczek, Michael Gottschaldt, Klaus Liefeith, Ulrich S. Schubert   +11 more
wiley   +1 more source