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Wyświetlanie pozycji 102-112 z 112
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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 ... -
UV Light Is No Longer Required for the Photoactivation of 1,3,4- Oxadiazolines
(American Chemical Society, 2023)Carbenes play a key role in a plethora of organic transformations. Although stabilized diazo carbonyl compounds predominate as a source of electrophilic carbenes, the hazardous nature of nonstabilized analogues calls for ... -
Vitamin B12 and a metal–organic framework enable the photocatalytic generation of alkyl radicals
(Royal Society of Chemistry, 2023)A versatile Co-catalyst-vitamin B12 (cobalamin)-can be photochemically reduced to its catalytically active Co(I) formunder visible light irradiation, in the presence of MIL-125-NH2(Ti) as a photocatalyst and utilized for ... -
Vitamin B12: An efficient cobalt catalyst for sustainable generation of radical species
(Elsevier, 2022)Vitamins are organic molecules that are essential for the proper functioning of mammalian cells. Among them, there is only one organometallic molecule: vitamin B12, a natural cobalt complex that is involved in DNA synthesis ... -
Wheat germ lipase: isolation, purification and applications
(Taylor and Francis, 2022)In recent years, wheat germ lipase (WGL) is attracting considerable interest. To date, several WGL applications have already been described: (i) fats and oils modification; (ii) esterification reactions in organic media, ...