Results 21 to 30 of about 26,162 (241)

Synthesis, anti-tuberculosis activity and QSAR study of 2,4-diarylquinolines and analogous polycyclic derivatives [PDF]

open access: yes, 2019
The multicomponent syntheses of 2,4-di-aryl-quinolines and analogous polycyclic derivatives as anti-tuberculosis agents were described. They were prepared via Beyer and Friedländer methods under microwave irradiation in short reaction times and good ...
Asís, Silvia Elizabeth   +7 more
core   +1 more source

TMSBr-Promoted Cascade Cyclization of ortho-Propynol Phenyl Azides for the Synthesis of 4-Bromo Quinolines and Its Applications

open access: yesMolecules, 2019
Difficult-to-access 4-bromo quinolines are constructed directly from easily prepared ortho-propynol phenyl azides using TMSBr as acid-promoter. The cascade transformation performs smoothly to generate desired products in moderate to excellent yields with
Fengyan Jin   +6 more
doaj   +1 more source

Therapeutic Activity of a Topical Formulation Containing 8-Hydroxyquinoline for Cutaneous Leishmaniasis

open access: yesPharmaceutics, 2023
Cutaneous leishmaniasis exhibits a wide spectrum of clinical manifestations; however, only a limited number of drugs are available and include Glucantime® and amphotericin B, which induce unacceptable side effects in patients, limiting their use.
Sarah Kymberly Santos de Lima   +11 more
doaj   +1 more source

LiBr-Catalyzed Simple and Efficient Synthesis of Some Novel Substituted Quinolines via Friedlander Heteroannulation Reaction [PDF]

open access: yes, 2007
A simple and efficient method has been developed for the condensation of o‐aminoaryl ketones with α‐methylene ketones in the presence of catalytic amounts of LiBr to afford the corresponding fused cyclic quinolines in high yield using the Friedlander ...
Jayashankara, V.P.   +2 more
core   +1 more source

Application of Heteropoly Acids as Heterogeneous and Recyclable Catalysts for Friedländer Synthesis of Quinolines

open access: yesE-Journal of Chemistry, 2010
New convenient conditions for the Friedländer synthesis of quinolines are described. Quinolines were readily prepared in the presence of heteropolyacids as heterogeneous and recyclable catalysts in good yields.
Majid M. Heravi   +4 more
doaj   +1 more source

Multicomponent Synthesis of 4-Aryl-4,9-dihydro-1H-pyrazolo[3,4-b]quinolines Using L-Proline as a Catalyst—Does It Really Proceed?

open access: yesMolecules, 2023
Looking for effective synthetic methods for 1H-pyrazolo[3,4-b]quinolines preparation, we came across a procedure where, in a three-component reaction catalysed by L-proline, 4-aryl-4,9-dihydro-1H-pyrazolo[3,4-b]quinolines are formed.
Andrzej Danel   +6 more
doaj   +1 more source

Synthesis of Azuleno[2,1-b]quinolones and Quinolines via Brønsted Acid-Catalyzed Cyclization of 2-Arylaminoazulenes

open access: yesMolecules, 2023
Quinolone and quinoline derivatives are frequently found as substructures in pharmaceutically active compounds. In this paper, we describe a procedure for the synthesis of azuleno[2,1-b]quinolones and quinolines from 2-arylaminoazulene derivatives, which
Taku Shoji   +6 more
doaj   +1 more source

A New synthesis of triazolo[4,5-g]quinolines and unexpected ring reduced products by treatment with hydrazine hydrate [PDF]

open access: yes, 2004
A new synthesis of the linear heterocycle 4-chloro-1H-triazolo[4,5-g]quinoline by reduction of the novel compound 4-chloro-1H-triazolo[4,5-g]quinoline-1-oxide is reported.
Carta, Antonio, Paglietti, Giuseppe
core   +1 more source

Bi- and tri-dentate imino-based iron and cobalt pre-catalysts for ethylene oligo-/polymerization [PDF]

open access: yes, 2013
Recent progress on the use of iron and cobalt complex pre-catalysts for ethylene reactivity is reviewed. The review is organized in terms of the denticity of the chelate ligands employed, with particular reference to the influence of the ligand ...
Feng, Chun   +6 more
core   +2 more sources

First-principles simulations of the initial phase of self-aggregation of a cyanine dye: structure and optical spectra [PDF]

open access: yes, 2014
Using first-principles simulations, we investigated the initial steps of the self-aggregation of the dye pseudoisocyanine (PIC) in water. First, we performed molecular dynamics (MD) simulations of the self-aggregation process, in which pile-of-coins ...
Haverkort, Frank   +2 more
core   +2 more sources

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