Results 21 to 30 of about 4,839 (215)

Synthesis of 5-(7′-indolyl)oxazoles and 2,5-di-(7′-indolyl)oxazoles

open access: yesTetrahedron, 2013
Abstract The synthesis of 7-aminoacetylindoles was achieved via the hydrogenation of 7-acylcyanides, which were produced through the oxidation of indole-7-cyanohydrin silylether intermediates. 7-Oxotryptamines were subsequently converted into 5-(7′-indolyl)oxazoles by reaction with acetic anhydride followed by phosphoryl chloride, and to 2,5-di-(7 ...
Kandemir, Hakan   +3 more
openaire   +3 more sources

Development and application of in silico models to design new antibacterial 5-amino-4-cyano-1,3-oxazoles against colistin-resistant E. coli strains

open access: yesArtificial Intelligence Chemistry, 2023
Here we describe the results of QSAR analysis based on artificial neural networks, synthesis, activity evaluation and molecular docking of a number of 1,3-oxazole derivatives as anti-E. coli antibacterials.
Ivan Semenyuta   +7 more
doaj   +1 more source

Suzuki Coupling of Oxazoles [PDF]

open access: yesOrganic Letters, 2006
AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Flegeau, Emmanuel Ferrer   +2 more
openaire   +3 more sources

Divergent Synthesis of C5‐Heteroatom Substituted Oxazoles [PDF]

open access: yes, 2022
5‐Oxazoyl‐sulfamates have been profiled as versatile building blocks for modifications of oxazoles with various nucleophiles. The unified approach provides a diversification platform to directly access 5‐amino‐oxazoles, 5‐oxazolyl‐sulfides, and 5‐oxazoyl‐
Hans‐Dieter Arndt   +5 more
core   +1 more source

Core spectroscopy of oxazole

open access: yesThe Journal of Chemical Physics, 2022
We have measured, analyzed, and simulated the ground state valence photoelectron spectrum, x-ray absorption (XA) spectrum, x-ray photoelectron (XP) spectrum as well as normal and resonant Auger–Meitner electron (AE) spectrum of oxazole at the carbon, oxygen, and nitrogen K-edge in order to understand its electronic structure.
Anna Kristina Schnack-Petersen   +8 more
openaire   +3 more sources

Synthesis and Characterization of Novel Heterocyclic Chalcones from 1-Phenyl-1H-pyrazol-3-ol

open access: yesMolecules, 2022
An efficient synthetic route to construct diverse pyrazole-based chalcones from 1-phenyl-1H-pyrazol-3-ols bearing a formyl or acetyl group on the C4 position of pyrazole ring, employing a base-catalysed Claisen–Schmidt condensation reaction, is described.
Arminas Urbonavičius   +9 more
doaj   +1 more source

Weak Intermolecular Interactions in a Series of Bioactive Oxazoles

open access: yesMolecules, 2021
The intermolecular interactions in a series of nine similar 4,5-phenyl-oxazoles were studied on the basis of crystal structures determined by X-ray diffraction. The crystal architectures were analyzed for the importance and hierarchies of different, weak
Anita M. Grześkiewicz   +2 more
doaj   +1 more source

Isocyanide Reactions Toward the Synthesis of 3-(Oxazol-5-yl)Quinoline-2-Carboxamides and 5-(2-Tosylquinolin-3-yl)Oxazole

open access: yesFrontiers in Chemistry, 2019
A palladium-catalyzed three-component reaction between 5-(2-chloroquinolin-3-yl) oxazoles, isocyanides, and water to yield 3-(oxazol-5-yl)quinoline-2-carboxamides is described.
Zahra Yasaei   +4 more
doaj   +1 more source

Reasoned opinion on the review of the existing maximum residue levels (MRLs) for isoxaflutole according to Article 12 of Regulation (EC) No 396/2005 [PDF]

open access: yesEFSA Journal, 2013
According to Article 12 of Regulation (EC) No 396/2005, the European Food Safety Authority (EFSA) has reviewed the Maximum Residue Levels (MRLs) currently established at European level for the pesticide active substance isoxaflutole.
European Food Safety Authority
doaj   +1 more source

Thieno-Thiazolostilbenes, Thienobenzo-Thiazoles, and Naphtho-Oxazoles: Computational Study and Cholinesterase Inhibitory Activity

open access: yesMolecules, 2023
Naphtho-triazoles and thienobenzo-triazoles have so far proven to be very potent inhibitors of the enzyme butyrylcholinesterase (BChE). Based on these results, in this work, new thienobenzo-thiazoles were designed and synthesized, and their potential ...
Milena Mlakić   +9 more
doaj   +1 more source

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