Results 51 to 60 of about 538,570 (408)

An isoxazole strategy for the synthesis of 4-oxo-1,4-dihydropyridine-3-carboxylates

open access: yesBeilstein Journal of Organic Chemistry, 2022
A method has been developed for the preparation of 2-alkyl-6-aryl-, 2-aryl-6-aryl and 2,6-diaryl-5-aryl/hetaryl-substituted methyl 4-oxo-1,4-dihydropyridine-3-carboxylates by Mo(CO)6-mediated ring expansion of methyl 2-(isoxazol-5-yl)-3-oxopropanoates ...
Timur O. Zanakhov   +3 more
doaj   +1 more source

Synthesis of Some New Enaminoketones, Analogous of Milrinone, 4,Pyrones and Related 4-Pyridones [PDF]

open access: yesIranian Journal of Chemistry & Chemical Engineering, 1996
Synthesis of 4-(N,N- dimethylamino)-3-aryl-3-butene-2-one, ethyl-5-aryl-4-oxo-4H-pyran-2-carboxylate, ethyl-5-aryl-4-pyridones-2-carboxylate and 5-aryl-3-cyano-5-methyl-2-pyridones (aryl=3-thienyl, 2-furyl) are described.
Aziz Shahrisa, Salar Hemmati
doaj  

On-surface route for producing planar nanographenes with azulene moieties [PDF]

open access: yesNano Letters 18, 418 (2018), 2017
Large aromatic carbon nanostructures are cornerstone materials due to their increasingly active role in functional devices, but their synthesis in solution encounters size and shape limitations. New on-surface strategies facilitate the synthesis of large and insoluble planar systems with atomic-scale precision.
arxiv   +1 more source

Synthesis and Photophysical Properties of 2-Aryl-6,8-bis(arylethenyl)-4-methoxyquinolines

open access: yesMolecules, 2012
Iodine-methanol mediated oxidative-aromatization of 2-aryl-6,8-dibromo-2,3-dihydroquinolin-4(1H)-ones afforded the corresponding 2-aryl-6,8-dibromo-4-methoxy-quinolines in high yield and purity.
Tebogo Ankie Khoza   +3 more
doaj   +1 more source

Photoinitiated oxidative addition of CF3I to gold(I) and facile aryl-CF3 reductive elimination. [PDF]

open access: yes, 2014
Herein we report the mechanism of oxidative addition of CF3I to Au(I), and remarkably fast Caryl-CF3 bond reductive elimination from Au(III) cations. CF3I undergoes a fast, formal oxidative addition to R3PAuR (R = Cy, R = 3,5-F2-C6H4, 4-F-C6H4, C6H5, 4 ...
TOSTE, F. Dean   +2 more
core   +1 more source

Palladium‐Catalyzed Direct Arylation of Aryl(azaaryl)methanes with Aryl Halides Providing Triarylmethanes. [PDF]

open access: yesChemInform, 2007
AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Niwa, Takashi   +2 more
openaire   +4 more sources

Reductive Arylation of Graphene: Insights into a Reversible Carbon Allotrope Functionalization Reaction [PDF]

open access: yesPhys. Status Solidi B 2014, 251, 2536-2540, 2018
The covalent functionalization of graphene represents a main topic in the growing field of nano materials. The reductive exfoliation of graphite with concomitant functionalization of the respective graphenide intermediates provides a promising approach towards functional graphene derivatives.
arxiv   +1 more source

One-pot H/D exchange and low-coordinated iron electrocatalyzed deuteration of nitriles in D2O to α,β-deuterio aryl ethylamines

open access: yesNature Communications, 2022
One-pot efficient synthesis of α,β-deuterio aryl ethylamines with high deuterium ratios using an easy-to-handle deuterated source under ambient conditions is desirable.
Rui Li   +5 more
doaj   +1 more source

Dihedral-Angle-Controlled Crossover from Static Hole Delocalization to Dynamic Hopping in Biaryl Cation Radicals [PDF]

open access: yes, 2016
In cases of coherent charge-transfer mechanism in biaryl compounds the rates follow a squared cosine trend with varying dihedral angle. Herein we demonstrate using a series of biaryl cation radicals with varying dihedral angles that the hole ...
Bates   +24 more
core   +2 more sources

ChemInform Abstract: Aryl Bromides and Aryl Chlorides for the Direct Arylation of Benzylic Amines Mediated by Ruthenium(II). [PDF]

open access: yesChemInform, 2013
AbstractThe ruthenium(II)‐catalyzed sp3 C–H bond arylation of benzylic amines with aryl halides is reported. In the present method, aryl iodides and, more importantly, also the cheaper aryl bromides and aryl chlorides can be applied as aryl sources. Additionally, the method does not require elaborate manipulations in a glove box and can be carried out ...
Marko D. Mihovilovic   +2 more
openaire   +4 more sources

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