Results 291 to 300 of about 26,379 (326)

Basicities of selected quinoxalines

Journal of Chemical & Engineering Data, 1982
As part of a continuing investigation of the relationship between the structure and physical properties of nitrogen heterocyclic systems, we were interested in the basicities of selected quinoxalines and the hyperfine splitting patterns for the corresponding anion radicals.
J. Hodge Markgraf, Richard A. Blatchly, Alan S. Huffadine, Barrie M. Peake   +3 more
openaire   +2 more sources

Synthesis and Antimalarial Activity of New Enantiopure Aminoalcoholpyrrolo[ 1,2-a]quinoxalines.

Medicinal chemistry, 2017
BACKGROUND We prepared a novel series of enantiopure mefloquine analogues with pyrrolo[ 1,2-a]quinoxaline core in order to fight Plasmodium falciparum resistant strain.
A. Jonet, J. Guillon, C. Mullié, A. Cohen, Guillaume Bentzinger, J. Schneider, N. Taudon, S. Hutter, N. Azas, S. Moreau, Solène Savrimoutou, P. Agnamey, A. Dassonville-Klimpt, P. Sonnet   +13 more
semanticscholar   +1 more source

Quinoxaline/phenylquinoxaline copolymers

Journal of Applied Polymer Science, 1977
AbstractThe thermal crosslinkability of the quinoxaline moiety incorporated within poly(phenylquinoxalines) was demonstrated by differential scanning calorimetry (DSC), torsional braid analysis (TBA), and high‐temperature adhesive evaluation. Several homopolymers, random copolymers, and polymer blends were prepared and evaluated.
openaire   +2 more sources

ChemInform Abstract: Synthesis of Some Substituted Quinoxalines and Polycyclic Systems Containing the Quinoxaline Nucleus.

ChemInform, 1996
AbstractChemInform 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.
John Parrick, Abid R. Ahmad, Lina K. Mehta   +2 more
openaire   +3 more sources

Highly Stereoselective Metal-Free Hydrogenations of Pyrrolo[1,2- a]quinoxalines.

Organic Letters, 2018
A metal-free hydrogenation of pyrrolo[1,2- a]quinoxalines has been successfully realized by using the combination of B(C6F5)3 and tris(4-methoxyphenyl)phosphine to furnish the corresponding 1,2,3,3a,4,5-hexahydropyrrolo[1,2- a]quinoxalines in 59-99 ...
Xiaoqin Liu, Ting Liu, Wei Meng, H. Du
semanticscholar   +1 more source

Iron Catalyzed Cascade Protocol for the Synthesis of Pyrrolo[1, 2‐a]quinoxalines: A Powerful Tool to Access Solid State Emissive Organic Luminophores

, 2017
An alluring iron catalyzed cascade process has been developed for the synthesis of pyrrolo[1, 2-a]quinoxalines by using 1-(2-aminoaryl)pyrrole and arylacetic acids.
J. Lade, Bhausaheb N. Patil, Pratima A. Sathe, Kamlesh S. Vadagaonkar, Prabhakar Chetti, A. Chaskar   +5 more
semanticscholar   +1 more source

An Efficient Synthesis of Pyrrolo[1,2‐a]quinoxalines by Copper‐Catalyzed C−H Activation of Arylacetic Acids

, 2017
An efficient and convenient synthesis of pyrrolo[1,2-a]quinoxalines from 1-(2-aminoaryl)pyrroles and arylacetic acids has been described by using a combination of CuSO4 as the catalyst and 2,2'-bipyridyl as the ligand in the presence of O2 as an oxidant.
J. Lade, Bhausaheb N. Patil, Mahendra V. Vhatkar, Kamlesh S. Vadagaonkar, A. Chaskar   +4 more
semanticscholar   +1 more source

3,4-Bis(bromomethyl)thieno[2,3-b]thiophene: Versatile Precursors for Novel Bis(triazolothiadiazines), Bis(quinoxalines), Bis(dihydrooxadiazoles), and Bis(dihydrothiadiazoles)

, 2016
A synthesis of novel bis(triazolothiadiazines) 11, 12, 13, 14, bis(quinoxalines) 16 and 17, bis(thiadiazoles) 24 and 25, and bis(oxadiazole) 31, which are linked to the thieno[2,3-b]thiophene core via phenoxymethyl group, was reported.
O. M. Sayed, Ahmed E. M. Mekky, A. Farag, A. Elwahy   +3 more
semanticscholar   +1 more source

Crosslinked polyamide‐quinoxalines

Journal of Polymer Science: Polymer Letters Edition, 1973
O, S, SO OR SO2 AND Y IS O-PHENYLENE, M-PHENYLENE, P-PHENYLENE OR- 1,2-DI(NH2-),4-((3,4-DI(NH2-)PHENYL)-X-)BENZENE WITH AN AMIDE OF THE FORMULA 1,3-BIS(PHENYL-CO-CO-Y-NH-CO-),5-(R-OOC-)BENZENE THESE POLYMERS FIND USE AS FILM OR COATINGS AND CAN ALSO BE MADE INTO FIBERS.
openaire   +2 more sources

Quinoxaline Sulfonamides

Journal of Medicinal Chemistry, 1965
S H, Dandegaonker, C K, Mesta
openaire   +2 more sources