Results 81 to 90 of about 64,953 (273)
Angewandte Chemie International Edition, EarlyView.Click chemistry has evolved from making covalent connections to also breaking bonds. Here, a cascade assembly is reported that combines these maneuvers to build multifunctional biomolecular scaffolds in a modular one‐pot reaction. The unifying azide release‐tetrazine hub clicks with a trans‐cyclooctene tag, rapidly liberates N,N‐dimethylaniline to ...
Markus Staudt +9 more
wiley +1 more source
Acta Crystallographica Section E: Crystallographic Communications, 2018 The title compound {systematic name: 3-carboxy-2-[2-(3-carboxypyridin-2-yl)disulfan-1-yl)]pyridin-1-ium chloride monohydrate}, C12H9N2O4S2+·Cl−·H2O, crystallizes in the triclinic space group P\overline{1}.
Alexander T. Chemey +2 more
doaj +1 more source
Beilstein Journal of Organic ChemistryEfficient water-solubilization of nanocarbons is desirable for both their biological and material applications, but so far has mainly relied on covalent modifications or amphiphiles featuring ionic side-chains. Here, we report a facile 2–4-step synthesis
Lorenzo Catti +2 more
doaj +1 more source
Investigation of the Pyridinium Ylide—Alkyne Cycloaddition as a Fluorogenic Coupling Reaction
Molecules, 2016 The cycloaddition of pyridinium ylides with alkynes was investigated under mild conditions. A series of 13 pyridinium salts was prepared by alkylation of 4-substituted pyridines.
Simon Bonte +4 more
doaj +1 more source
Cryoscopy in molten pyridinium chloride
, 1967 The molal cryoscopic constant in molten pyridinium chloride (m.p. 146.0 ) has been found to be 17.4 (subject to confirmation by calorimetry) and the cryoscopic heat of fusion, 2310 40 cal mole-1.
H Bloom, VC Reinsborough
core +1 more source
Bulletin of the Korean Chemical Society, EarlyView.Abstract DNA‐encoded libraries (DELs) enable large‐scale screening for hit identification, but accessing sp3‐rich, three‐dimensional chemotypes beyond flat, aromatic scaffolds remains challenging. Multicomponent reactions (MCRs) assemble such complexity from simple building blocks in a single step, and reaction‐engineering strategies have extended on ...
Jimin Moon +3 more
wiley +1 more source
Pyridinium cationic lipids as gene transfer agents
, 2004 Pyridinium cationic lipids useful as non-viral gene delivery agents are disclosed. The agents are prepared by reaction of pyrylium salts with primary amines.
Seitz, William A. +7 more
core +1 more source
Expanding the Scope of Indium in Frustrated Lewis Pair Chemistry
Chemistry – A European Journal, EarlyView.All good things come in threes: The pyridine‐“protected” FLP tBu2InCH2PtBu2·Py shows three different kinds of reactivity: Besides “typical” FLP activity, it prefers formation of the “soft” isomers for substrates with multiple sites for FLP attack, but reacts with SO2 as a “masked” In/C FLP by insertion into the In─C bond.
Daniel N. Heuer +5 more
wiley +1 more source
MolbankWe report the synthesis and characterization of the novel pyridinium salts from (E)-2-(pyridin-4-ylmethylene)hydrazine-1-carboximidamide. The pyridinium salts were obtained via the reaction of guanylhydrazone derived from pyridine-4-carbaldehyde with ...
Fatemeh Ataie Alani +3 more
doaj +1 more source
Hexaaquazinc(II) dinitrate bis[5-(pyridinium-3-yl)tetrazol-1-ide]
Acta Crystallographica Section E: Crystallographic Communications, 2018 Hexaaquazinc(II) dinitrate 5-(pyridinium-3-yl)tetrazol-1-ide, [Zn(H2O)6](NO3)2·2C6H5N5, crystallizes in the space group P\overline{1}. The asymmetric unit contains one zwitterionic 5-(pyridinium-3-yl)tetrazol-1-ide molecule, one NO3− anion and one half ...
Ignacio Chi-Duran +4 more
doaj +1 more source