Results 101 to 110 of about 14,380 (267)

Ni@Zeolite-Y Nano-Porous: Preparation and Application as a High Efficient Catalyst for Facile Synthesis of Quinoxaline, Pyridopyrazine, and Indoloquinoxaline Derivatives [PDF]

Iranian Journal of Chemistry & Chemical Engineering, 2019
In this research, by a simple and modified method, nanoporous of Ni(II) ion loaded Y-type zeolite (NNZ) was designed and applied as a novel highly efficient catalyst for the synthesis of quinoxalines, pyrido[2,3-b]pyrazines, and indolo[2,3-b]quinoxalines
Mehdi Kalhor, Zahra Seyedzade
doaj  

Efficient Syntheses of Diverse N-Heterocycles: The Molybdenum(VI)-Catalyzed Reductive Cyclization of Nitroarenes using Pinacol as a Deoxygenating­ Agent

SynOpen, 2018
Molybdenum(VI)-catalyzed domino reductive cyclization of nitroarenes has been devised for the syntheses of 1,4-benzoxazines and 1,4-benzothiazines in the presence of pinacol as deoxygenating agent.
Raghuram Gujjarappa, Nagaraju Vodnala, Arup K. Kabi, Dhananjaya Kaldhi, Mohan Kumar, Uwe Beifuss, Chandi C. Malakar   +6 more
doaj   +1 more source

Synthetic strategies for 5- and 6-membered ring azaheterocycles facilitated by iminyl radicals [PDF]

, 2016
The author thanks EaStCHEM for financial support.The totality of chemical space is so immense that only a small fraction can ever be explored. Computational searching has indicated that bioactivity is associated with a comparatively small number of ring ...
Walton, John Christopher
core   +2 more sources

Transition Metal‐Free Ortho‐Deuteration of Electron‐Deficient N‐Heteroarenes

European Journal of Organic Chemistry, EarlyView.
Herin, the metal‐free, selective deuteration of electron‐deficient N‐heteroaromatics is reported using O‐carbamate and carboxamide ortho‐directing groups (DGs), lithium 2,2,6,6‐tetramethylpiperidide as the base, and D2O as a green source of D+. The substrate scope includes 10 small molecule N‐heteroaromatic compounds and two pharmaceutically relevant ...
Žiga Oražem, Luka Jedlovčnik, Jernej Birk, Andrej Pevec, Ross D. Jansen‐van Vuuren, Janez Košmrlj   +5 more
wiley   +1 more source

Антивирусное и интерферониндуцирующее действие аминоэтоксидифенилов [PDF]

, 2015
Проблематика. Новосинтезованим сполукам 4,4′-біс-(2-R-етокси)біфенілам притаманні як інтеркаляція в ДНК, так і противірусна активність та здатність індукувати інтерферон. Мета дослідження.
Shemendyuk, O. V., Spivak, N. Ya., Zholner, L. G., Zholobak, N. M., Жолнер, Л. Г., Жолнер, Лілія Григорівна, Жолобак, Н. М., Жолобак, Надія Михайлівна, Спивак, Н. Я., Співак, Микола Якович, Шемендюк, Е. В., Шемендюк, Олена Віталіївна   +11 more
core  

3D interlocking triggers intramolecular interactions to achieve an efficient deep‐blue multiple resonance thermal activation delayed fluorescence material

FlexMat, EarlyView.
A multi‐resonance thermally activated delayed fluorescence emitter, DPABN‐ICz, designed via spatial assembly of dual‐resonance units, achieves a deep‐blue emission, peaking at 445 nm, with a small full width at half maximum of 19 nm, and a Commission Internationale de L'Eclairage (CIE)y coordinate of 0.06.
Xu‐Feng Luo, Jun‐Yi Wang, Cong Wang, Chao Deng, Xunwen Xiao, You‐Xuan Zheng   +5 more
wiley   +1 more source

Imidazolo [1,2-a] e 1,2,4-triazolo[4,3-a] chinossaline analoghe degli antifolici metotrexato e trimetrexato [PDF]

, 2002
Abbiamo progettato una nuova serie di chinossaline, nelle quali l’anello pirrolico è stato sostituito con un’anello imidazolico o con uno triazolico lasciando nelle posizioni 2, 5, 6, 7 e 8 dell’anello chinossalinico gli stessi sostituenti ...
Corona, Paola, La Colla, Paolo, Loddo, Roberta, Loriga, Mario, Paglietti, Giuseppe, Setzu, Maria Giovanna   +5 more
core  

Guideline for the Detection of Advanced Glycation End Products

Food Safety and Health, EarlyView.
This experimental guide focuses on using methods such as GC–MS, LC–MS/MS, and HPLC–MS/MS to detect advanced glycation end products (AGEs) from the Maillard pathway, facilitating investigation of their association with diabetes and cardiovascular diseases. ABSTRACT Advanced glycation end products (AGEs), stable products of nonenzymatic reactions between
Chenxu Bao, Siyu Han, Boqian He, Jingying Liu, Jia Yan, Chunlin Li, Qian Wu   +6 more
wiley   +1 more source

Unexpected Reduction of Ethyl 3-Phenylquinoxaline-2- carboxylate 1,4-Di-N-oxide Derivatives by Amines

Molecules, 2008
The unexpected tendency of amines and functionalized hydrazines to reduceethyl 3-phenylquinoxaline-2-carboxylate 1,4-di-N-oxide (1) to afford a quinoxaline 1c andmono-oxide quinoxalines 1a and 1b is described. The experimental conditions werestandardized
Antonio Monge, Ignacio Aldana, Silvia Pérez-Silanes, Beatriz Solano, Esther Vicente, Lidia M. Lima   +5 more
doaj   +1 more source

Appendix I. Ultraviolet Absorption Spectra of Cinnoline and Quinoxaline Derivatives [PDF]

, 1953
J. C. E. Simpson
openalex   +1 more source