Results 91 to 100 of about 73,933 (268)

Anion Influence on the Packing of 1,3-Bis(4-Ethynyl-3-Iodopyridinium)-Benzene Halogen Bond Receptors

open access: yesCrystals, 2019
Rigid and directional arylethynyl scaffolds have been widely successful across diverse areas of chemistry. Utilizing this platform, we present three new structures of a dicationic 1,3-bis(4-ethynyl-3-iodopyridinium)-benzene halogen bonding receptor with ...
Daniel A. Decato   +2 more
doaj   +1 more source

Oxytocin‐ und Vasopressin‐Photosonden zur Entschlüsselung der Neuropeptid‐Signalgebung mit hoher räumlicher und zeitlicher Präzision

open access: yesAngewandte Chemie, EarlyView.
Neue biokompatible Oxytocin‐ und Vasopressin‐Photosonden mit modernsten Photocages. Diese Photosonden sind inaktiv und können mit spezifischen Lichtwellen entschützt werden, was eine Rezeptoraktivierung mit hoher zeitlicher und räumlicher Kontrolle ermöglicht. Abbildung erstellt mit https://BioRender.com ZUSAMMENFASSUNG Das Oxytocin/Vasopressin (OT/VP)
Konstantin Raabe   +7 more
wiley   +1 more source

Photochemical Approaches to Complex Chemotypes: Applications in Natural Product Synthesis. [PDF]

open access: yes, 2016
The use of photochemical transformations is a powerful strategy that allows for the formation of a high degree of molecular complexity from relatively simple building blocks in a single step. A central feature of all light-promoted transformations is the
Kärkäs, Markus D.   +2 more
core   +2 more sources

Post-synthetic derivatization of graphitic carbon nitride with methanesulfonyl chloride: Synthesis, characterization and photocatalysis [PDF]

open access: yes, 2020
Bulk graphitic carbon nitride (CN) was synthetized by heating of melamine at 550 degrees C, and the exfoliated CN (ExCN) was prepared by heating of CN at 500 degrees C.
Cvejn, Daniel   +6 more
core   +1 more source

Antibacterial Activity Ods Fractions of Marine Sponge Auletta SP. Against Mycobacterium Smegmatis [PDF]

open access: yes, 2019
The marine sponge collected from tropical coral reefs in Manado North Sulawesi Indonesia was screened for antimicrobial activities. In the screening program to search for antituberculotic inhibitors, the result found that the ethanol extract ODS ...
Sumilat, D. A. (Deiske)
core   +2 more sources

On the Chemical Stabilities of Ionic Liquids

open access: yesMolecules, 2009
Ionic liquids are novel solvents of interest as greener alternatives to conventional organic solvents aimed at facilitating sustainable chemistry. As a consequence of their unusual physical properties, reusability, and eco-friendly nature, ionic liquids ...
Yen-Ho Chu   +3 more
doaj   +1 more source

2-(Ethoxycarbonyl)pyridinium nitrate [PDF]

open access: yesActa Crystallographica Section E Structure Reports Online, 2010
In the title compound, C(8)H(10)NO(2) (+)·NO(3) (-), the cation is essentially planar with C-O-C-C and C-O-C-O torsion angles of -178.1 (2) and 2.1 (4)°, respectively. In the crystal, N-H⋯O and C-H⋯O hydrogen-bond inter-actions stabilize the structure.
openaire   +3 more sources

In‐situ‐Konstruktion von Imidazopyridinium‐Fluoreszenzlabels für Biokonjugationen

open access: yesAngewandte Chemie, EarlyView.
Durch Chromophor‐Engineering von Isochinolinaldehyden entstehen TICT‐basierte fluorogene Farbstoffe für die In Situ Markierung unterschiedlicher (Bio‐)Moleküle mit großen Stokes‐Verschiebungen, die mit der Zellbildgebung kompatibel sind. ZUSAMMENFASSUNG Einfache, effiziente Transformationen fluorogenen Charakters, die unter biokompatiblen Bedingungen ...
Dongchen Du   +7 more
wiley   +1 more source

Synthesis and structure of new N-alkoxy-N-(1-pyridinium)urea chlorides [PDF]

open access: yes, 2016
New N-[1-(4-amino)pyridinium]-N-methoxyurea chloride, N-[1-(2-amino)pyridinium]-N-methoxyurea chloride and their analogs were synthesized by N-alkoxy-N-chloroureas reaction with the proper pyridines in acetonitrile or ether solution by improved procedure.
Anishchenko, A. A.   +7 more
core  

Asymmetrische α‐Alkylierung mit aktivierten und unaktivierten Elektrophilen durch einen hocheffizienten und rezyklierbaren Lewis‐Säure/Imidazolium‐Katalysator

open access: yesAngewandte Chemie, EarlyView.
Ein luftstabiler, einfach herzustellender bifunktioneller Cu(II)/Imidazolium‐Komplex ermöglicht hoch enantioselektive α‐Alkylierungen von 1,3‐Dicarbonylverbindungen mit herausragender Produktivität (TON bis zu 1740). Zu den hervorzuhebenden Merkmalen zählen ein breites Elektrophilspektrum, das sowohl π‐aktivierte als auch nicht aktivierte Reagenzien ...
Johanna Haußmann   +8 more
wiley   +1 more source

Home - About - Disclaimer - Privacy