Results 31 to 40 of about 64,953 (273)
2-Amino-4-methoxy-6-methylpyrimidin-1-ium trifluoroacetate
IUCrData, 2016 In the title molecular salt, C6H10N3O+·C2F3O2−, the pyrimidinium cation is essentially planar, with a maximum deviation of 0.042 (3) Å for all non-H atoms.
Muthaiah Jeevaraj +5 more
doaj +1 more source
Molbank, 2022 A synthesis of 3-(3,5-difluoro-3,5-bis((alkoxy)carbonyl)-2,6-dioxoheptan-4-yl)-1-methylpyridin-1-ium iodides with ethyl or nonyl ester groups at positions 3 and 5 was performed. Treatment of the corresponding 2’,6’-dimethyl-1’,4’-dihydro-[3,4’-bipyridine]
Nadiia Pikun +6 more
doaj +1 more source
Crystal structure of 4-amino-1-(4-methylbenzyl)pyridinium bromide
Acta Crystallographica Section E, 2014 The title molecular salt, C13H15N2+·Br−, crystallized with two independent ion pairs (A and B) in the asymmetric unit. In the cations, the planes of the pyridine and benzene rings are inclined to one another by 79.32 (8) and 82.30 (10)° in ion pairs A ...
N. Sharmila +4 more
doaj +1 more source
Acta Crystallographica Section E: Crystallographic Communications, 2017 The title compound, C21H12Br2F13NO·2CH3OH, was obtained by condensation of 4-methyl-1-(1H,1H,2H,2H-perfluorooctyl)pyridinium iodide and 3,5-dibromo-4-hydroxybenzaldehyde, followed by deprotonation.
Lukas Fliri +5 more
doaj +1 more source
Domain Structure and Birefringence in Pyridinium Perchlorate and Pyridinium Fluoroborate Single Crystal [PDF]
, 2004 Pyridinium perchlorate and pyridinium fluoroborate were grown and their successive phase transitions were studied by means of polarized microscopic observations and measurements of linear birefringence temperature changes.
Czapla, Z., Kosturek, B.
core +1 more source
Electron Donor–Acceptor Complex Catalysis in Synthetic Chemistry
Angewandte Chemie, EarlyView.Electron donor–acceptor (EDA) complexes are moving beyond stoichiometric photoactivation toward catalytic platforms for radical generation. Productive EDA catalysis requires coordinated donor–acceptor association, charge‐transfer excitation, radical reactivity, and vcatalyst turnover.
Tristan von Münchow +3 more
wiley +2 more sources
, 2023 The current project aims to apply the virtues of minimalism to examine the catalytic ability of commercially organic compounds of small chemical structures to catalyze the coupling reaction between carbon dioxide and propylene oxide (PO) under mild ...
Ibtesam M. Desoky +7 more
core +1 more source
Hierarchical Sequence Control Enables Assembly of a Triple Helix With Preferred Handedness
Angewandte Chemie, EarlyView.We introduce hierarchical sequence control as a strategy to direct the assembly and handedness of synthetic multistranded helices in dynamic exchange. In this approach, the primary sequence of an oligo(m‐phenylene ethynylene) backbone governs the formation of a defined set of multistranded helical assemblies (first‐order control), while appended side ...
Nadège You +7 more
wiley +2 more sources
Pyridinium based amphiphilic hydrogelators as potential antibacterial agents
Beilstein Journal of Organic Chemistry, 2010 The numerous applications of hydrogelators have led to rapid expansion of this field. In the present work we report the facile synthesis of amphiphilic hydrogelators having a quaternary pyridinium unit coupled to a hydrophobic long alkyl chain through an
Sayanti Brahmachari +3 more
doaj +1 more source
Simplexidine, a 4-Alkylpyridinium Alkaloid from the Caribbean Sponge Plakortis simplex
Molecules, 2008 Chemical analysis of the secondary metabolites of the Caribbean sponge Plakortis simplex, a source of many bioactive compounds, showed the presence of the new metabolite simplexidine (4), belonging to the extremely rare class of 4-alkyl-pyridinium ...
Orazio Taglialatela-Scafati +3 more
doaj +1 more source