Results 31 to 40 of about 2,396 (173)

QUANTITATIVE FLUORESCENCE INTENSITYSTRUCTURE RELATIONSHIPS OF CERTAIN QUINOLONE-METAL CHELATES [PDF]

open access: yesBulletin of Pharmaceutical Sciences. Assiut University, 2006
A quantitative relationship was found between the relative fluorescence intensities of certain metal chelates of some quinolone antibacterials and their physicochemical parameters namely: the pKa1 (corresponding to the ionisation of the 3-carboxylic ...
Mohamed Abou-Elwafa   +3 more
doaj   +1 more source

Substituent effects on the solvent power of the haloolefin HCFO-1233 yd.(Z)

open access: yesResults in Chemistry
The solvent power of the hydrochlorofluoroolefin HCFO-1233 yd.(Z) is investigated using electron-withdrawing and electron-donating substituents on the “parent” (Z)-1-X-2,3,3-trifluoropropene, where X = NH2, OH, CH3O, CH3, F, H, Cl, COOH, CF3, CN, and NO2.
A. Fan   +3 more
doaj   +1 more source

Effect of redox potential on manganese-mediated benzylalcohol and sulfide oxidation

open access: yesComptes Rendus. Chimie, 2021
Tridentate 1,3-bis($2^{\prime}$-Ar-imino)isoindolinato manganese(II) complexes were found to efficiently catalyze the mild oxidation of organic sulfides to sulfoxides and benzyl alcohols to benzaldehydes with mCPBA and PhIO, but they proved almost ...
Meena, Bashdar I.   +2 more
doaj   +1 more source

Personalized Network‐Guided Neuromodulation Enhances Human Working Memory

open access: yesAdvanced Science, EarlyView.
A personalized neuromodulation framework combining individualized functional brain network targeting with real‐time neural decoding is introduced. Using concurrent TMS–fMRI, participant‐specific stimulation targets and optimal frequencies are identified. Only optimal‐frequency stimulation improves working memory across sessions.
Ahsan Khan   +13 more
wiley   +1 more source

Dual‐Substrate Synergistic Photocatalysis: Exogenous Reagent‐Free Co‐Removal of Phenol and Cr(VI) via Electron‐Donor‐Mediated Redox Coupling over Modified Carbon Nitride

open access: yesAdvanced Science, EarlyView.
An exogenous reagent‐free dual‐substrate strategy harnesses phenol as an intrinsic electron donor to drive synchronous phenol degradation and Cr(VI) reduction over modified carbon nitride. π–π stacking and hydrogen bonding direct electron transfer to the catalyst, enriching photogenerated electrons and accelerating Cr(VI) reduction 6.4‐fold. This waste‐
Xiaoman Zhang   +9 more
wiley   +1 more source

Binding Constants of Substituted Benzoic Acids with Bovine Serum Albumin

open access: yesPharmaceuticals, 2020
Experimental data on the affinity of various substances to albumin are essential for the development of empirical models to predict plasma binding of drug candidates. Binding of 24 substituted benzoic acid anions to bovine serum albumin was studied using
Diliara Khaibrakhmanova   +2 more
doaj   +1 more source

Nickel‐Catalyzed Three‐Component Difluoroalkylation‐Amination for the Direct Access to Anti‐Inflammatory β‐Difluoroalkyl Amines

open access: yesAdvanced Science, EarlyView.
A nickel‐catalyzed three‐component reductive fluoroalkylation‐amination strategy of N‐vinylamides for the direct access to the α‐amidyl‐β‐difluoroalkyl amines was reported here. The synthetic method features with broad substrate scope, mild conditions, high functional group tolerance, and convenience to handle.
Chang Xu   +8 more
wiley   +1 more source

Synthesis, IR and NMR spectral correlations in some symmetrical diimines

open access: yesBulletin of the Chemical Society of Ethiopia, 2014
A series of diimines have been synthesized by coupling of diamine with substituted benzaldehydes. The purities of these diimines were checked by their analytical and spectroscopic data. The spectral frequencies νCN (cm-1), NMR chemical shifts (δ, ppm) of
G. Thirunarayanan
doaj   +1 more source

Hammett correlation and reaction mechanisms in mechanochemical imine formation

open access: yes, 2023
Solution-based physical organic chemistry was marked by the development of Hammett correlation, which further served as a major tool for deciphering the mechanisms of organic reactions in solution. If applicable to mechanochemical reactions, it will provide support for understanding the reaction mechanisms and expansion of this important synthetic ...
Vugrin, Leonarda   +3 more
openaire   +3 more sources

Studying of physicochemical properties of newly synthesized uracil derivatives

open access: yesZaštita Materijala, 2015
Uracil derivatives are potentially biologically active compounds, so the investigation of their physical and chemical properties is very important for their further application.
Jadranka A. Tot   +1 more
doaj   +1 more source

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