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Wyświetlanie pozycji 86-105 z 109
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Saddle-shaped aza-nanographene with multiple odd-membered rings
(Royal Society of Chemistry, 2023)A saddle-shaped aza-nanographene containing a central 1,4-dihydropyrrolo[3,2-b]pyrrole (DHPP) has been prepared via a rationally designed four-step synthetic pathway encompassing intramolecular direct arylation, the Scholl ... -
Selective Approaches to α- and β-Arylated Vinyl Ethers
(Wiley, 2022)We developed simple and efficient protocols for palladium-catalyzed regioselective a- and b-arylations of structurally diverse vinyl ethers. Both catalytic methods proceed under relatively mild reactions conditions ... -
Selective transformations of friedelanes isolated from cork smoker wash solids
(Elsevier, 2024)Friedelin (1) and 3-acetoxyfriedel-3-en-2-one (4), commonly known as friedelane triterpenoids, have been isolated from cork smoker wash solids (also known as black wax) on a multi-gram scale. These compounds are valuable ... -
Simultaneous Enantiodivergent Synthesis of Diverse Lactones and Lactams via Sequential One-Pot Enzymatic Kinetic Resolution–Ring-Closing Metathesis Reactions
(MDPI, 2022)One of the goals of diversity-oriented synthesis is to achieve the structural diversity of obtained compounds. As most biologically active compounds are chiral, it is important to develop enantioselective methods of their ... -
Singlet Fission in a New Series of Systematically Designed Through-space Coupled Tetracene Oligomers
(Wiley, 2024)Singlet fission (SF) holds great promise for current photovoltaic technologies, where tetracenes, with their relatively high triplet energies, play a major role for application in silicon-based solar cells. However, the ... -
Site-Selective, Photocatalytic Vinylogous Amidation of Enones
(American Chemical Society, 2022)Despite the broad interest in organic compounds possessing a γ-aminocarbonyl motif, limited strategies for their synthesis have been reported. Herein, we describe a mild and efficient method for the site-selective amidation ... -
Spatially resolved chiroptical study of thin films ofbenzo[1,2-b:4,5-b’]dithiophene-based oligothiophenes bysynchrotron radiation electronic circular dichroism imaging(SR-ECDi) technique
(Wiley, 2022)The study of the chiroptical properties of thin-film samples of two chiral benzo[1,2-b:4,5-b’]dithiophene-based oligothiophenes with optoelectronic properties was car-ried out at Diamond B23 beamline using the synchrotron ... -
Spectroscopic and Crystallographic Characterization of Two Hydrochloride Cathinones: 1-(4-fluoro-3-methylphenyl)-2-(pyrrolidin-1-yl)pentan-1-one (4-F-3-Me-α-PVP) and N-ethyl-2-amino-1-phenylheptan-1-one (N-ethylheptedrone)
(MDPI, 2023)In this paper, two cathinone derivatives, 4F-3Me-alfa-PVP and N-ethylheptedrone, seized on the illegal drug market in Poland, were described and characterized by various instrumental analytical methods. The compounds were ... -
Spinristor: A Spin-Filtering Memristor
(Wiley, 2023)In this paper, an in silico proof of concept of a spinristor is proposed and provided; a new electronic component that combines a spin-filter and a memristor in a single molecule, useful for in-memory processing. It builds ... -
The Study on Timolol and Its Potential Phototoxicity Using Chemical, In Silico and In Vitro Methods
(MDPI, 2024)Timolol (TIM) is a non-selective ß-adrenergic receptor antagonist used orally for the treatment of hypertension and heart attacks, and topically for treating glaucoma; lately, it has also been used in some specific ... -
Synthesis and Antimicrobial Activity of the Pathogenic E. coli Strains of p-Quinols: Additive Effects of Copper-Catalyzed Addition of Aryl Boronic Acid to Benzoquinones
(MDPI, 2023)A mild and efficient protocol for the synthesis of p-quinols under aqueous conditions was developed. The pivotal role of additives in the copper-catalyzed addition of aryl boronic and heteroaryl boronic acids to benzoquinones ... -
Synthesis and cytotoxic activity of 1,2,3-triazoles derived from 2,3-seco-dihydrobetulin via a click chemistry approach
(Elsevier, 2022)In search of new cytotoxic derivatives based on the lupane scaffold, the seco-lupane azides were coupled with a number of alkynes under the 1,3-dipolar cycloaddition (CuAAC) conditions to afford 1,2,3-triazoles. Phenylalkynes ... -
The Synthesis and Evaluation of Diethyl Benzylphosphonates as Potential Antimicrobial Agents
(MDPI, 2022)The impact of substituent at phenyl ring of diethyl benzylphosphonate derivatives on cytotoxic activity was studied. The organophosphonates were obtained based on developed palladium-catalyzed α, β-homodiarylation of vinyl ... -
Tandem Pd-Catalyzed Cyclization/Coupling of Non-Terminal Acetylenic Activated Methylenes with (Hetero)Aryl Bromides
(MDPI, 2022)We report a new method for a tandem Pd-catalyzed intramolecular addition of active methylene compounds to internal alkynes followed by coupling with aryl and heteroaryl bromides. Highly substituted vinylidenecyclopentanes ... -
Tandem rigidification and p-extension as a key tool for the development of a narrow linewidth yellow hyperfluorescent OLED system
(Royal Society of Chemistry, 2022)Hyperfluorescence (HF), a relatively new phenomenon utilizing the transfer of excitons between two luminophores, requires careful pairwise tuning of molecular energy levels and is proposed to be the crucial step towards ... -
Toward Coordination Cages with Hybrid Chirality: Amino Acid-Induced Chirality on Metal Centers
(American Chemical Society, 2022)Tripodal chiral ligands containing amino acid residues and salicyl-acylhydrazone units were synthesized and used to obtain coordination cages through deprotonation and coordination to gallium. These coordination cages have ... -
Triptycene Derivatives: From Their Synthesis to Their Unique Properties
(MDPI, 2022)Since the first preparation of triptycene, great progress has been made with respect to its synthesis and the understanding of its properties. Interest in triptycene-based systems is intense; in recent years, advances ... -
A Unique and Stable Polyproline I Helix Sorted out from Conformational Equilibrium by Solvent Polarity
(American Chemical Society, 2022)Polyproline I helical structures are often considered as the hidden face of their most famous geminal sibling, Polyproline II, as PPI is generally spotted only within a conformational equilibrium. We designed and synthesized ... -
Unlocking the reactivity of diazo compounds in red light with the use of photochemical tools
(Royal Society of Chemistry, 2023)Structurally diversified diazoalkanes can be activated under red light irradiation relying on direct photolysis, photosensitization or photoredox catalysis. -
Unprecedented 1,2-Aryl Shift Accompanying Double Alkyne Benzannulation
(Wiley, 2023)The tandem intramolecular hydroarylation of alkynes accompanied by a 1,2-aryl shift is described. Harnessing the unique electron-rich character of 1,4-dihydropyrrolo[3,2-b]pyrrole scaffold, we demonstrate that the ...