Results 41 to 50 of about 29,062 (270)
Hydrogen Bond‐Assisted PCET and Formation of WIII─OH in Bis(Dithiolene) Complex
Angewandte Chemie, EarlyView.The single crystal structure of complex [2Et3NH‐1] reveals hydrogen bonding at both W‐oxo and dithiolene‐S sites within the bis(dithiolene) WIV‐oxo complex. This finding provides critical evidence for dithiolene's involvement in proton reactions in high‐valent W‐oxo complexes.
Wonjung Lee +9 more
wiley +2 more sources
Journal of Heterocyclic Chemistry, 1973 AbstractThe treatment of 3β‐hydroxy‐16α‐bromo‐5α‐androstan‐17‐one, 3β‐acetoxy‐16α‐bromo‐5‐androsten‐17‐one and 21‐bromo‐5‐pregnen‐3β‐ol‐20‐one with 4,5‐dimethyl‐o‐phenylenediamine gave substituted quinoxalines.Hydrolysis of 3β‐acetoxy‐5‐androsteno[16,17‐b]‐6′,7′‐dimethylquinoxaline produced the corresponding 3β‐hydroxy compound.
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2-(3-Nitrophenoxy)quinoxaline [PDF]
Acta Crystallographica Section E Structure Reports Online, 2010 In the title mol-ecule, C(14)H(9)N(3)O(3), the dihedral angle between the quinoxaline and benzene rings is 77.13 (9)°. The mol-ecule is twisted about the ether-benzene O-C bond, with a C-O-C-C torsion angle of -102.8 (2)°. In the crystal, mol-ecules are linked by C-H⋯O hydrogen bonds, forming layers in the ab plane, with one nitro O atom accepting two ...
Hassan, N.D. +5 more
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Electrochemical behavior of indolone-N-oxides: Relationship to structure and antiplasmodial activity [PDF]
, 2012 Indolone-N-oxides exert high parasiticidal activity at the nanomolar level in vitro against Plasmodiumfalciparum, the parasite responsible for malaria.
Fabre, Paul-Louis +6 more
core +3 more sources
Angewandte Chemie, EarlyView.Herein, we report the use of bis(trimethylaluminum)‐1,4‐diazabicyclo[2.2.2]octane (DABAl‐Me3) as practical source of radicals for the introduction of valuable methyl groups to aryl bromides via a Nickel/metallaphotocatalytic cross coupling strategy.
Jonas Djossou +8 more
wiley +2 more sources
IUCrDataThe structure of the title compound, [C14H18N2)2Ag2](NO3)2, contains subtle differences in ligand, metal, and counter-anion coordination. One quinoxaline ligand uses one of its quinoxaline N atoms to bond to one silver cation. That silver cation is bound
Guy Crundwell, Ashley Leeds
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Antimicrobial Evaluation and Synthesis of Some Phenylpyrazolo benzothiazolo quinoxaline Derivatives
E-Journal of Chemistry, 2009 2,3-Diphenyl quinoxaline (SI) was fused with 2-amino benzothiazoles (SII) by a methylene bridge, which was then allowed for acetylation. The acetylated product (SIV) was made to react with different aromatic aldehydes to give chalcones (SV1-SV5 ...
CH. Sridevi +3 more
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The Joint Center for Energy Storage Research: A New Paradigm for Battery Research and Development
, 2015 The Joint Center for Energy Storage Research (JCESR) seeks transformational change in transportation and the electricity grid driven by next generation high performance, low cost electricity storage.
Crabtree, George
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Angewandte Chemie, EarlyView.Two solvated hydrogen‐bonded organic frameworks (HOFs) based on tetraazaanthraquinone and anthraquinone were found to undergo quasi single‐crystal‐to‐single‐crystal transformations through hydrogen‐bond cleavage and re‐formation. These transformations induced crystal crack propagations, and molecular‐level correlations between the structural ...
Haruka Kubo +2 more
wiley +2 more sources
A quinoxaline derivative as a potent chemotherapeutic agent, alone or in combination with benznidazole, against Trypanosoma cruzi. [PDF]
PLoS ONE, 2014 BackgroundChagas' disease is a condition caused by the protozoan Trypanosoma cruzi that affects millions of people, mainly in Latin America where it is considered endemic.
Jean Henrique da Silva Rodrigues +4 more
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