Results 61 to 70 of about 7,031 (227)
Thermochemical and Theoretical Studies of 2-Hydroxyquinoxaline, 2,3-Dihydroxyquinoxaline, and 2-Hydroxy-3-methylquinoxaline [PDF]
, 2000 The standard (p° = 0.1 MPa) molar enthalpies of formation for crystalline 2-hydroxyquinoxaline, 2,3-dihydroxyquinoxaline, and 2-hydroxy-3-methylquinoxaline were derived from the standard molar enthalpies of combustion, in oxygen, at T = 298.15 K ...
Matos, M. A. R. +4 more
core +1 more source
Bifunctional Photocatalysts: Exploiting Proximity for Enhanced Reaction Performance
Chemistry – A European Journal, EarlyView.This review covers the application of the bifunctional approach to photocatalysis as a means to attain (enhanced) enantioselectivity, and, more in general, as a strategy to enhance the catalytic performance through an effective use of short‐lived reaction intermediates.
Luigi Dolcini +3 more
wiley +1 more source
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.
openaire +2 more sources
Investigation of TNBC in vitro Antiproliferative Effects of Versatile Pirrolo[1,2-a]quinoxaline Compounds [PDF]
, 2019 he triple-negative breast cancer (TNBC) is characterized by a more aggressive nature and poorer prognosis, nowadays none pharmaceutical approach is still available.
Erika Cione +6 more
core +4 more sources
Chemistry – A European Journal, EarlyView.A readily accessible, air‐ and moisture‐stable palladium precatalyst, [Pd(1‐MeNAP)(tBuBrettPhos)]OTf, enables the direct N‐arylation of NH‐sulfoximines with (hetero)aryl chlorides under exceptionally mild conditions ideal for late‐stage diversification of drug‐like scaffolds.
Sourav Manna +5 more
wiley +1 more source
Condensation of 4-hydroxy-2-thiazolines with 1,2-phenylenediamine as a novel effective route to thiazolo[3,4-a]quinoxalines [PDF]
, 2004 Thiazolo[3,4-a]quinoxalin-4-ones were prepared in two steps starting from methyl phenylchloropyruvate using a new strategy for the construction of the ring system. A key step in this new method involves the reaction of 4-hydroxytetrahydrothiazoles with 1,
Gubaidullin, Aidar T +4 more
core +1 more source
Journal of Chemical Research, 2022 Oxidative coupling of 2-methylquinolines with quinoxalines via a TBHP ( t -butyl hydroperoxide) and TFA (trifluoroacetic acid) mediated Minisci reaction affords quinolin-2-yl(quinoxalin-2-yl)methanone derivatives.
Xue Li +5 more
doaj +1 more source
FlexMat, EarlyView.A blue‐hazard‐free single‐emissive‐layer white OLED is realized using an anti‐quenching multiple‐resonance TADF emitter, BNCT. By integrating a sterically protected MR core with efficient energy transfer capability, BNCT enables warm‐white emission with high efficiency, negligible hazardous blue photons, and a simplified device architecture for next ...
Xiao‐Long Liu +9 more
wiley +1 more source
Gold-catalyzed oxidation of arylallenes: Synthesis of quinoxalines and benzimidazoles
Beilstein Journal of Organic Chemistry, 2011 A gold-catalyzed oxidation of arylallenes to form α-diketones and aldehydes in good yields is presented. Further directed synthesis of quinoxalines and benzimidazoles, via the condensation of the resulting α-diketones and aldehydes with benzene-1,2 ...
Dong-Mei Cui +3 more
doaj +1 more source
FlexMat, EarlyView.Two exciplex emitters are constructed based on a host‐guest doping strategy, and their exciton dynamics processes are investigated in depth. High‐performance OLEDs are fabricated by employing these exciplexes as emitters or sensitizers, providing excellent electroluminescence efficiencies and low efficiency roll‐offs.
Jingwen Xu +4 more
wiley +1 more source