Results 121 to 130 of about 19,883 (275)

Axial Chirality Control Through Palladium‐Catalyzed Alkenylation Reactions for the Atroposelective Synthesis of 4‐Arylquinolin‐2‐ones

open access: yesEuropean Journal of Organic Chemistry, EarlyView.
Palladium(II)‐catalyzed intramolecular C─H alkenylation of cinnamides allows the atroposelective synthesis of axially chiral 4‐arylquinolones, with the chirality being installed by ring formation. DFT studies have shown that the reaction proceeds by prior activation of the alkene and the enantioselectivity is determined during the β‐hydride elimination
Brenda Fundora   +8 more
wiley   +1 more source

NaH-Mediated One-Pot Cyclocondensation of 6-Nitroquinoline with Aromatic Hydrazones To Form [1.2.4]Triazino[6,5-f]quinolines and/or Pyrazolo[3,4-f]quinolines

open access: yes, 2016
6-Nitroquinoline undergoes direct cyclocondensation with aromatic hydrazones in the presence of sodium hydride in DMF at −10 °C, giving the corresponding 3-aryl-1(3)H-pyrazolo[3,4-f]quinolines and/or 3-aryl[1.2.4]triazino[6,5-f]quinolines in low to ...
Hitomi Suzuki (253106)   +2 more
core   +1 more source

QUINOLINE DERIVATIVES. PART IV.

open access: yes, 1937
In view of the fact that glyoxatinoquinolines of Narang and Räy have the requisite antiseptic properties against paramaecia, benziminazolyIquinoline derivatives, which are expected to possess antimalarial properties, have been ...
openaire   +6 more sources

Mo‐Catalyzed Synthesis of 3‐Substituted Quinolines From Nitroarenes and Aldehydes

open access: yesEuropean Journal of Organic Chemistry, EarlyView.
A one‐pot Friedländer synthesis of 3‐substituted quinolines from readily available o‐nitrobenzaldehydes and aldehydes or acetals has been developed under dioxomolybdenum(VI) catalysis. Pinacol acts as a benign reductant, enabling in situ nitroarene reduction and annulation without isolation of o‐aminobenzaldehydes and provides access to diverse ...
Raúl Martínez‐González   +3 more
wiley   +1 more source

Synthesis of Indolo- and Benzothieno[2,3‑b]quinolines by a Cascade Cyclization of o‑Alkynylisocyanobenzene Derivatives

open access: yes, 2019
A new synthetic approach for the synthesis of indolo­[2,3-b]­quinolines and benzothieno­[2,3-b]­quinolines has been developed by employing the freshly prepared o-alkynylisocyanobenzenes derived from o-alkynylformamide derivatives as substrates.
Natthamon Inthalaeng (7864874)   +8 more
core   +1 more source

Low-molecular nitrogenous bases and sulphurous compounds of highly paraffinic and highly resinous oils

open access: yesИзвестия Томского политехнического университета: Инжиниринг георесурсов, 2019
Relevance of the research is caused by the importance of accumulation and systematization of data on the content and structure of heteroatomic components in high-paraffinic high-resinous oils for the effective solution of the problems of production ...
Anara Ayurova, Natalia Gerasimova
doaj  

The research progress in polyethylene oxide polymer electrolytes

open access: yesFlexMat, EarlyView.
Polyethylene oxide (PEO) has become the mainstream matrix material for solid polymer electrolytes (SPEs) due to its excellent lithium salt complexation ability and processability. However, its high crystallinity results in low ionic conductivity at room temperature and difficulty in suppressing lithium dendrite growth, which significantly hinders the ...
Ying Wei   +8 more
wiley   +1 more source

Recent advances and prospects for high‐efficiency blue hot exciton organic light‐emitting diodes

open access: yesFlexMat, EarlyView.
Blue organic light‐emitting diodes (OLEDs) face great challenges in achieving the balance between color purity, device efficiency, and stability. Hot exciton materials offer a solution by rapidly converting non‐emissive triplet excitons into singlet ones through a high‐lying reverse intersystem crossing process.
Xiaoen Shi   +3 more
wiley   +1 more source

Efficient and environmentally-benign three-component synthesis of quinolines and bis-quinolines catalyzed by recyclable potassium dodecatungstocobaltate trihydrate under microwave irradiation.

open access: yes, 2012
Microwave-assisted one-pot three-component reaction between aromatic amines, aromatic aldehydes and phenylacetylene is accomplished efficiently in the presence of catalytic amounts of potassium dodecatungstocobaltate trihydrate (K5CoW12O40·3H2O) to ...
Mohammadpoor-Baltork, Iraj   +13 more
core   +1 more source

Recent advances in chiral organic room‐temperature phosphorescence with circularly polarized luminescence

open access: yesFlexMat, EarlyView.
This review systematically summarizes representative recent advances in organic circularly polarized room‐temperature phosphorescence materials toward optoelectronic and information security applications. Abstract Circularly polarized room‐temperature phosphorescence (CPRTP) materials combine the dual advantages of long‐lived triplet emission and ...
Liang Zhang   +2 more
wiley   +1 more source

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