Results 1 to 10 of about 14,393 (158)

Different Schiff Bases—Structure, Importance and Classification

open access: yesMolecules, 2022
Schiff bases are a vast group of compounds characterized by the presence of a double bond linking carbon and nitrogen atoms, the versatility of which is generated in the many ways to combine a variety of alkyl or aryl substituents. Compounds of this type
Barbara Dmochowska   +2 more
exaly   +3 more sources

Schiff Bases: Interesting Scaffolds with Promising Antitumoral Properties

open access: yesApplied Sciences (Switzerland), 2021
Schiff bases, named after Hugo Schiff, are highly reactive organic compounds broadly used as pigments and dyes, catalysts, intermediates in organic synthesis, and polymer stabilizers.
Domenico Iacopetta   +2 more
exaly   +3 more sources

Schiff bases: A short review of their antimicrobial activities

open access: yesJournal of Advanced Research, 2011
Schiff bases are aldehyde- or ketone-like compounds in which the carbonyl group is replaced by an imine or azomethine group. They are widely used for industrial purposes and also exhibit a broad range of biological activities.
Cleiton Moreira da Silva   +2 more
exaly   +3 more sources

Synthesis of Schiff bases based on Chitosan, thermal stability and evaluation of antimicrobial and antitumor activities [PDF]

open access: yesScientific Reports
A Schiff base of Chitosan was prepared by condensing of the Chitosan (CS) with six aromatic aldehydes and confirmed by FT-IR, NMR, XRD, TGA, and DSC. XRD results showed the disappeared of peaks at 2θ = 10° for CS and appeared one peaks at around 2θ of 23°
Abdullah Ali Alamri   +7 more
doaj   +2 more sources

Schiff Bases: A Short Survey on an Evergreen Chemistry Tool

open access: yesMolecules, 2013
The review reports a short biography of the Italian naturalized chemist Hugo Schiff and an outline on the synthesis and use of his most popular discovery: the imines, very well known and popular as Schiff Bases.
Wenling Qin, Sha Long, Mauro Panunzio
exaly   +3 more sources

Efficient mechanochemical synthesis of new fluorinated Schiff bases: a solvent-free, alternative to conventional method with mercury adsorption properties [PDF]

open access: yesBMC Chemistry
The development of sustainable synthetic techniques is of critical importance in modern chemistry. This paper describes a mechanochemical approach to the synthesis of novel fluorinated Schiff bases via ball milling, which provides a fast, high-yield, and
Mirza T. Baig   +7 more
doaj   +2 more sources

A Comparative Study of the Values of Ionization Constants for Acid Compounds Derived from N-formyl pipyidines [PDF]

open access: yesمجلة التربية والعلم, 2012
The paper is concerned with the determination of pKa or pK′a values for a new fourteen imines by potentometric titration method. These imines are prepared from the mother compound the N- formyl pipyidines in a forms of oximes, phenolic Schiff bases ...
Adel Azzouz, Heba El Mawla
doaj   +1 more source

Schiff base-mediated base pairing [PDF]

open access: yesNucleic Acids Symposium Series, 2005
We here present a novel covalently linked base pair via Schiff base formation between 5-formyluracil (fU) and 5-aminocytosine (AmC). The formation of Schiff base remarkably increases thermal stability of the duplex DNA, whereas it completely dissociates upon heating at 90 degrees C. Neither AmC nor fU produces covalent linkage with other natural bases,
Chikara, Dohno   +2 more
openaire   +2 more sources

Electrochemical and Spectroscopic Studies on the Interaction Modes of Calf Thymus DNA with Antibacterial Schiff Bases obtained from Substituted Salicylaldehydes and Sulfamethizole

open access: yesInternational Journal of Electrochemical Science, 2018
In this study, two Schiff bases have been prepared from the condensation of sulfamethizole (SMTZ) with 3-methoxy and 5-nitro derivatives of salicylaldehyde.
Vahide Pehlivan   +3 more
doaj   +3 more sources

Tetra Schiff Bases as Polyvinyl Chloride Thermal Stabilizers

open access: yesChemistry, 2021
Tetra Schiff bases were used as thermal stabilizers to enhance the properties of polyvinyl chloride (PVC) when operated at high temperatures. The thermal stability of PVC films doped with Schiff bases was tested by the weight-loss method, Fourier ...
Dina S. Ahmed   +6 more
doaj   +1 more source

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