A5085298655- Synthesis of heterocyclic compounds
- Coordination Chemistry and Organometallics
- X-ray Diffraction in Crystallography
- Crystallization and Solubility Studies
- Synthesis and Biological Evaluation
- Synthesis and Catalytic Reactions
- Synthesis and Reactions of Organic Compounds
- Phenothiazines and Benzothiazines Synthesis and Activities
- Synthesis and biological activity
- Oxidative Organic Chemistry Reactions
- Click Chemistry and Applications
- Chemical Synthesis and Analysis
- Asymmetric Synthesis and Catalysis
- Chemical Synthesis and Reactions
- Synthesis and Characterization of Heterocyclic Compounds
- Crystallography and molecular interactions
- Chemical synthesis and pharmacological studies
- Multicomponent Synthesis of Heterocycles
- Organic Chemistry Synthesis Methods
- Organic Chemistry Cycloaddition Reactions
- Synthesis and Reactivity of Heterocycles
- Synthesis and Reactivity of Sulfur-Containing Compounds
- Catalytic C–H Functionalization Methods
- Sulfur-Based Synthesis Techniques
- Chemical Reaction Mechanisms
University of Monastir
2011-2021
Laboratoire de Synthèse Organique
2018-2019
Catalyse
2018-2019
Abstract This paper concerns the immobilisation of either [bis(2-methylallyl)(1,5-cyclooctadienne)ruthenium(II)] (I) or ruthenium chloride (RuCl3) (II) on chitosan microspheres (catalyst I and catalyst II, respectively). These heterogenised catalysts were used for oxidative degradation two acid dyes, i.e. [Calmagite (Calma) Acid Blue 25 (AB25)] in aqueous solution at pH 7.0 presence hydrogen peroxide (H2O2). Prepared solid supports characterised by Fourier transform infrared (FTIR) spectral...
The present paper describes the synthesis of new palladium-oxazoline complexes in one step with good to high yields (68-95%). oxazolines were prepared from enantiomerically pure α-aminoalcohols. structures synthesized palladium confirmed by NMR, FTIR, TOFMS, UV-visible spectroscopic analysis and X-ray diffraction. optical properties evaluated determination gap energy values (E g) ranging between 2.34 3.21 eV. Their catalytic activities tested for degradation Eriochrome Blue Black B (a model...
New chiral Schiff bases have been synthesized and characterized with an important contribution from quantum chemical calculations at the DFT level of theory. They evaluated for their physical biological properties.
New N-substituted 4-arylidene-isoquinoline-1,3-dione derivatives were obtained as one geometrical isomer by aldol condensation of the appropriate aldehyde and corresponding homophthalimides. The structural elucidation compounds 3a–h was established infrared NMR spectroscopy including Citation 1 H, 13 C, CH CORR, distortionless enhancement polarization transfer measurements. Compounds 3d–h evaluated for their antibacterial activity against some strains bacteria using disc diffusion method...
New spiro-isoquinolinediones were prepared by regio- and stereoselective 1,3-dipolar cycloaddition of (E)-4-arylidene-N-methyl-isoquinoline-1,3-dione derivatives 1a–d with C-aryl-N-phenylnitrones 2e–g. NMR studies confirmed that only one regioisomer was formed selectively in the majority cases. Regioselectivity reaction established 1H 13C assignments. The stereochemistry spirannic compounds 3a–l 4a–c has been corroborated means DFT calculations. structures all products characterized...
1,3-Dipolar cycloaddition of various acyclic nitrones with 5-methylenehydantoin derivatives afforded new chiral spiroadducts in good yields. All the spirohydantoins were obtained through a regio- and stereospecific pathway, spirocarbon atom was linked to isoxazolidine oxygen atom. A representative example reduction spirohydantoin 8 Zn/AcOH led substituted 1,3-aminoalcohol hydantoin 20.
Enantiopure 2,5-disubstituted 3-phenylamino-3,5-dihydro-4Himidazol-4-one derivatives were obtained in good to excellent yields by condensation of chiral -amino acid phenylhydrazides and triethyl orthoesters the presence dry acetic as catalyst.All reactions are performed under solvent-free mild conditions.The imidazol-4-one ring often appears core structure many drug substances, covering a wide range pharmaceutical activities. 1,2For example, 5,5-disubstituted imidazolones have shown...
New spiro-isoquinolinoisoxazolines were prepared by regioselective 1,3-dipolar cycloaddition of 4-arylidene-isoquinoline-1,3-dione derivatives la-d with arylnitrile oxides 2e-g. In all cases, two regioisomers 3ae-dg and 4ae-dg isolated comparable ratios. Regioselectivity was established unambiguous structural NMR assignments X-ray diffraction analysis.
Background: Acetylation of protic nucleophiles is used to protect these functional groups. Most the methods described in literature use solvents, one or more equivalent toxic bases expensive and catalysts. Therefore, new methodologies, above all, greener economical procedures, are still demand. Objective: An eco-efficient method was developed for acetylation alcohols, phenols, thiols, amines, carbohydrates, using acetic anhydride a catalytic amount environmentally benign inexpensive FeCl 3...
An efficient and short route to synthesise spiropyrimidine-2,4-diones was achieved using 1,3-dipolar cycloaddition followed by a cyclisation reaction. The reaction is regiospecific in all cases.
New chiral 1-(arylamino)imidazo[2,1-a]isoindole-2,5-dione derivatives were obtained in good to excellent yields via the cyclocondensation of 2-formylbenzoic acid and various α-amino arylhydrazides using water as solvent presence sodium dodecyl sulfate surfactant under simple minimum manipulation, without purification. The reaction is totally diastereoselective gives access nitrogenated tricyclic core with a relative trans stereochemistry.
from teaching and research institutions in France or abroad, public private centers.L'archive ouverte pluridisciplinaire HAL, est destinée au dépôt et à la diffusion de documents scientifiques niveau recherche, publiés ou non, émanant des établissements d'enseignement recherche français étrangers, laboratoires publics privés.