Results 241 to 250 of about 29,062 (270)
Synthesis of Quinoxaline Analogues [PDF]
Synthesis, 2011 AbstractA straightforward synthesis of polycyclic title compounds is achieved by treatment of cyclic ketones with NBS followed by a direct one‐pot coupling with 1,2‐diaminoarenes.
Ru-Ting Hsu +3 more
openaire +2 more sources
Some of the next articles are maybe not open access.
Related searches:
Related searches:
ChemInform Abstract: Pyrrolo[1,2‐a]quinoxalines Based on Quinoxalines
ChemInform, 2011AbstractReview: 65 refs.
A. A. Kalinin, V. A. Mamedov
openaire +2 more sources
Quinoxalines Potential to Target Pathologies
Current Medicinal Chemistry, 2015The study of quinoxalines has increased immeasurably during the last two decades, due firstly to their relatively simple chemical synthesis, which has generated a vast variety of compounds with diverse structural modifications, and secondly, to the wide therapeutic potential and biological activities exhibited by this family of compounds.
Antonio Guirado +5 more
openaire +4 more sources
Photochemical hydroxylation of quinoxalines
Recueil des Travaux Chimiques des Pays-Bas, 1976AbstractIrradiation of quinoxaline (1) in acidic aqueous solution under anaerobic conditions leads to the formation of 5‐hydroxyquinoxaline (4) and the 1,4‐dihydroquinoxaline radical cation (5). The radical cation (5) was characterized by ESR spectroscopy.Under aerobic conditions 5‐hydroxyquinoxaline (4) is the only irradiation product formed.
H. C. A. van Beek +2 more
openaire +3 more sources
Synthesis of condensed quinoxalines
Journal of Heterocyclic Chemistry, 1991AbstractA novel efficient synthesis of fluorescent, fused quinoxalines was achieved. 6‐Triazolylthiazolo[4,5‐b]quinoxalines were synthesized by the diazotisation of 6‐amino‐2‐methylthiazolo[4,5‐b]quinoxaline and coupling with selected aromatic amines followed by air oxidation.
Dinesh W. Rangnekar, R. W. Sabnis
openaire +3 more sources
Synthesis of Pyrazolo[1,5-a]quinoxalines
Synthesis, 1996AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
BROGGINI, GIANLUIGI +3 more
openaire +5 more sources
Polymers with quinoxaline units. V. Polymers with quinoxaline and dioxin units
Journal of Polymer Science Part A-1: Polymer Chemistry, 1969AbstractLadder or partly ladder polymers have been prepared by condensation of tetraphenols with tetrachloroquinoxaline compounds in melt, or in pyridine, naphthalene, and nitrobenzene reaction media. The polymers are dark‐colored, powdery materials with good thermal stability. Some of the samples are slightly soluble in sulfuric acid, while others are
Carl S. Marvel, Rainer Wolf
openaire +2 more sources
2014
Macrocyclic cоmpounds are some of the most interesting objects in modern synthetic chemistry and, as shown in this critical review, they provide an attractive entry into quinoxaline derivatives, which are very important heterocycles from many points of view including medicinal and pharmaceutical chemistry and material sciences.
Alexey A. Kalinin, Vakhid A. Mamedov
openaire +2 more sources
Macrocyclic cоmpounds are some of the most interesting objects in modern synthetic chemistry and, as shown in this critical review, they provide an attractive entry into quinoxaline derivatives, which are very important heterocycles from many points of view including medicinal and pharmaceutical chemistry and material sciences.
Alexey A. Kalinin, Vakhid A. Mamedov
openaire +2 more sources
Quinoxaline-Based Cyclo(oligophenylenes) [PDF]
The Journal of Organic Chemistry, 2015 A series of fully conjugated quinoxaline-based oligophenylene macrocycles is synthesized by Ni(0)-mediated Yamamoto-type diaryl homocoupling of (fluorinated) 2,3-bis(4'-bromophenyl)quinoxaline precursors. Cyclotrimers and cyclotetramers are obtained as the dominant reaction products.
Wouter Maes +13 more
openaire +2 more sources
Polymers with quinoxaline units. IV. Polymers with quinoxaline and oxazine units
Journal of Polymer Science Part A-1: Polymer Chemistry, 1968AbstractSix ladder or partly ladder polymers have been prepared by the condensation of diaminodiphenols with tetrachloro‐ or terahydroxyquinoxaline derivatives with the use of poly (phosphoric acid), pyridine, and naphthalene as reaction media. The polymers thus obtained are highly colored powdery materials which are slightly soluble in concentrated ...
Masahiko Okada +2 more
openaire +2 more sources