Results 31 to 40 of about 399,883 (354)

Intra- and Intermolecular C−H Activation by Bis(phenolate)pyridineiridium(III) Complexes [PDF]

open access: yes, 2011
A bis(phenolate)pyridine pincer ligand (henceforth abbreviated as ONO) has been employed to support a variety of iridium complexes in oxidation states I, III, and IV.
Bercaw, John E.   +2 more
core   +2 more sources

Symurban Nanocrystals for Advanced Anti-Pollution Skincare [PDF]

open access: yes, 2020
Several of most common dermatoses worldwide, e.g., psoriasis and atopic dermatitis, are worsened in their clinical picture when the skin is regularly exposed to an increased air pollution level, e.g., particulate matter.
Köpke, Daniel, Pyo, Sung Min
core   +1 more source

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

Regioselective Reactions of Highly Substituted Arynes [PDF]

open access: yes, 2010
The fully regioselective reactivity of four new highly substituted silyl aryl triflate aryne precursors in aryne acyl-alkylation, acyl-alkylation/condensation, and heteroannulation reactions is reported.
Bugga, Pradeep   +4 more
core   +2 more sources

Imide and isatin derivatives as β-lactam mimics of β-lactam antibiotics [PDF]

open access: yes, 2002
Activated γ-lactams, which are derivatives of succinimide, phthalimide and isatin with suitable elements of molecular recognition, have been synthesised as mimics of the ß-lactam antibiotics and their chemical and biological reactivity ...
Casey, Lorraine A.   +4 more
core   +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

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  

Amine, Amido, and Imido Complexes of Tantalum Supported by a Pyridine-Linked Bis(phenolate) Pincer Ligand: Ta−N π-Bonding Influences Pincer Ligand Geometry [PDF]

open access: yes, 2009
A series of tantalum imido and amido complexes supported by a pyridine-linked bis(phenolate) ligand has been synthesized. Characterization of these complexes via X-ray crystallography reveals both C_s and C_2 binding modes of the bis(phenolate)pyridine ...
Bercaw, John E.   +3 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

Bimetallic Effects on Ethylene Polymerization in the Presence of Amines: Inhibition of the Deactivation by Lewis Bases [PDF]

open access: yes, 2012
Dinickel complexes supported by terphenyl ligands appended with phenoxy and imine donors were synthesized. Full substitution of the central arene blocks rotation around the aryl–aryl bond and allows for the isolation of atropisomers.
Agapie, Theodor   +2 more
core   +2 more sources

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