Results 31 to 40 of about 84,342 (322)

Büchwald-Hartwig reaction applied to synthesis of new luminescent liquid crystal triarylamines derived from isoxazoles [PDF]

open access: yes, 2015
© 2015 Taylor & Francis Group, LLC. The present work describes the synthesis and characterization of novel series of triarylamines isoxazoles (TAA) addressed to the organic photovoltaic materials. Diarylisoxazoles were synthesized by sequential [3+2] 1,
Fernandes, T. H. M.   +3 more
core   +2 more sources

Use of apomorphine in Parkinsonian patients with neuropsychiatric complications to oral treatment [PDF]

open access: yes, 1997
Neuropsychiatric side effects often complicate anti-Parkinsonian therapy and pose a significant problem in the optimal management of idiopathic Parkinson's disease.
Abbott, R.J.   +6 more
core   +2 more sources

(7,8-Dimethyl-2-oxo-2H-chromen-4-yl)methyl piperidine-1-carbodithioate

open access: yesIUCrData, 2016
In the title compound, C18H21NO2S2, the 2H-chromene ring systems is nearly planar, with a maximum deviation of 0.023 (2) Å. The coumarin unit makes a dihedral angle of 60.54 (8)° with the piperidine ring, which adopts a chair conformation.
A. J. Ravi   +2 more
doaj   +1 more source

Ammonium Salts of 5-(3-Chromenyl)-5H-chromeno[2,3-b]pyridines

open access: yesMolbank, 2021
The ammonium salts of many drugs have significantly improved the solubility and, accordingly, the bioavailability of medicinal substances in the human body.
Yuliya E. Ryzhkova   +2 more
doaj   +1 more source

Common Mitochondrial DNA Mutations Generated through DNA-Mediated Charge Transport [PDF]

open access: yes, 2009
Mutation sites that arise in human mitochondrial DNA as a result of oxidation by a rhodium photooxidant have been identified. HeLa cells were incubated with [Rh(phi)2bpy]Cl3 (phi is 9,10-phenanthrenequinone diimine), an intercalating photooxidant, to ...
Barton, Jacqueline K.   +2 more
core   +2 more sources

Regioselective ring opening of aziridine for synthesizing azaheterocycle

open access: yesFrontiers in Chemistry, 2023
Aziridine had different regioselective ring openings depending on the functional group of its alkyl substituent. In the case of the alkyl group bearing γ-ketone at the C2 substituent of aziridine, the ring opening by the hydroxy nucleophile from H2O ...
Nikhil Srivastava, Hyun-Joon Ha
doaj   +1 more source

Pivalolactone, 2. Copolyester synthesis via interchange reactions with polypivalolactone [PDF]

open access: yes, 1993
The synthesis of copolyesters via interchange reactions of polypivalolactone (PPVL) with several compounds was studied. The synthetical procedures are two-stage melt processes: in the first stage ester bonds in the polymer chain are cleaved and new ...
Bantjes, Adriaan   +4 more
core   +4 more sources

Cobalt-Catalyzed (Hetero)arylation of Saturated Cyclic Amines with Grignard Reagents

open access: yesMolecules, 2018
(Hetero)aryl substituted saturated cyclic amines are ubiquitous scaffolds in biologically active molecules. Metal-catalyzed cross-couplings between halogeno N-heterocycles and organometallic species are efficient and modular reactions to access these ...
Baptiste Barré   +3 more
doaj   +1 more source

Fat transforms ascorbic acid from inhibiting to promoting acid-catalysed N-nitrosation [PDF]

open access: yes, 2007
<b>Background</b>: The major potential site of acid nitrosation is the proximal stomach, an anatomical site prone to a rising incidence of metaplasia and adenocarcinoma.
Combet, E.   +7 more
core   +2 more sources

Synthesis of Substituted α-Trifluoromethyl Piperidinic Derivatives

open access: yesMolecules, 2017
A comprehensive survey of pathways leading to the generation of α-trifluoromethyl monocyclic piperidinic derivatives is provided (65 references).
Sarah Rioton   +2 more
doaj   +1 more source

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