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Intelligence Way from Eco-friendly Synthesis Strategy of New Heterocyclic Pyrazolic Carboxylic a-Amino Esters

Chemical Research in Chinese Universities 2020年第6期36卷 1183-1189页

作者： EI Houssine MABROUK Nadia ARROUSSE Adil KORCHI Mohammed LACHGAR Ahmad OUBAIR Abdelrhani ELACHQAR Mohamed JABHA Mohammed LACHKAR Fadoua El HAJJAJI Zakia RAIS mustapha taleb Laboratory of Materials Engineering for the Environment&Natural Resources Department of ChemistryFaculty of Sciences and TechnicsBP 509 BoutalamineErrachidiaMoulay Ismail University MeknesMorocco Laboratory of Engineering OrganometallicMolecular and Environment(LlMMOME)Faculty of SciencesUniversity Sidi Mohamed Ben AbdellahB.P.1796FezMorocco Faculty of Sciences and Technologies University Sidi Mohamed Ben AbdellahFezMorocco Department of Chemistry Faculty of Sciences Dhar El MahrazUniversity Sidi Mohamed Ben AbdellahB.P.1796FezMorocco Natural Resources and Environment Team(RN&E) Faculty of Sciences and TechnicsErrachidiaMoulay Ismail UniversityMorocco

The a-amino acid derivatives constitute a class of compounds of particular medicinal and synthetic attention and considerable interest has been devoted to their synthesis in recent *** the present work,we develop the computational study of the synthesis reaction of new pyrazolyl a-amino esters derivatives using the Gaussian 09based on the DET/B3LYP density functional theorv method,with the base 6-31G(d.p)to ensure the possibility of carrying out these reactions within the laboratory of ***,this research has encouraged us to establish an economical synthesis strategy of these products in overall vields of 73.5%to 87%to have access to new active biomolecule through the O-alkvlation reaction between methyl a-azidoglycinate N-benzoylated and primary pyrazole alcohols(3,5-dimethyl-1 H-pyrazol-1-yl)methanol,(1H-pyrazol-1-yl)methanol and(3-ethoxy-5-methyl-1H-pyrazol-1yl)methanoll under different operating *** structure of the prepared heterocyclic systems was characterized by conventional spectroscopic techniques,like H NMR.I3℃NMR,and *** results revealed that the experimental study is in good correlation with the computational one.

关键词： a-Pyrazolyl amino ester Methyl a-azido glycinate N-benzoylated O-Alkylation DFT/B3LYP/6-31G(d,p)

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Towards Understanding the Antieorrosive Mechanism of Novel Surfactant Based on Mentha pulegium Oil as Eco-friendly Bio-source of Mild Steel in Acid Medium: a Combined DFT and Molecular Dynamics Investigation

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Chemical Research in Chinese Universities 2019年第1期35卷 85-100页

作者： BOUOIDINA Asmae EL-HAJJAJI Fadoua EMRAN Khadijanh BELGHITI Mohammed Elalaoui ELMELOUKY Abderrahmane taleb mustapha ABDELLAOUI Abdelfattah HAMMOUTI Belkheir OBOT Ime Bassey Laboratory of Engineering ElectrochemistryModeling and EnvironmentFaculty of Sciences Sidi Mohamed Ben Abdellah UniversityFez 3500Morocco Department of Chemistry College of ScienceTaibah UniversityAl-Madinah Al-Monawarah PO Box4050Saudi Arabia Laboratory of Applied Analytical Chemistry Materials and Environment Faculty of Seiences University of Mohammed PremierOujda 60000Morocco Laboratoire Des Matieres Condensees et Physique Statistique Chouaib Doukkali University El-jadida 24000Morocco Laboratoire de Physiologie Pharmaeologie et Santo EnvironnementaleFaculty of Sciences Sidi Mohamed Ben Abdellah UniversityFez 3500Morocco Center of Research Excellence in Corrosion Research Institute King Fahd University of Petroleum and MineralsDhahran 31261Saudi Arabia

Today,due to the increasingly stringent European directives concerning the use of molecules with certain toxicities towards the environment or their users,the essential oils,extracts,and molecules derived from plants exhibiting the characteristic of being biodegradable can be considered as a source of green corrosion inhibitors instead of harmful synthetic *** present work was devoted to testing the essential oil extracted from Mentha pulegium leaves(M1) as a corrosion inhibitor for C-steel in 1mol/L HCl solution using both electrochemical techniques and gravimetric measurements for the evaluation of the inhibition efficiencies at different *** results obtained showed that the inhibition efficiency increased with an increase in Ml concentration to reach a maximum value of 92.21%.We sought to determine the molecule responsible for this high efficiency,starting with the analysis of oil chemical composition by gas chromatography coupled with mass *** analysis revealed that menthol(M2)and isomenthol(M3)were the principal *** order to identify the molecule responsible for the inhibition and explain the protection mechanism involved,quantum chemical calculations and Monte Carlo simulations were used to explain the interaction of menthol,the major constituent of M1 with the *** practically confirm these results,we studied the action of 1mol/L HCl on steel with and without the addition of M2 by both methods(gravimetric and electrochemical study).A very high efficiency was obtained,an efficiency of 94.90% at 10^-3 mol/L,which was retained for a long exposure time,and slightly decreased in function of ***,a good correlation between the experimental data,theoretical calculations,and SEM studies was obtained,which denied that the Ml efficiency was only a result of a synergy effect and confirmed the high efficiency of Mentha oil and its main component(menthol)as a strong ecological inhibitor of corrosion.

关键词： Corrosion Ecological inhibitor Menthapulegium Menthol Density functional theory Monte Carlo simulation

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Chilaiditi Syndrome

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Open Journal of Radiology 2017年第3期7卷 164-169页

作者： Jean Marie Ovungu Pierlesky Elion Ossibi Franck Mvumbi Ismael Dandakoye Soumana Badre Alami Meryem Boubbou mustapha Maaroufi Khalid Mazaz Khalid Ait taleb Youssef Lamrani Department of Radiology Hassan II University Hospital Fez Morocco Department of Visceral Surgery Hassan II University Hospital Fez Morocco

The interposition of the colon or the small intestine between the liver and the diaphragm otherwise called Chilaiditi syndrome remains a rare condition. Its incidence varies between 0.025% and 0.28% according to recent literature and is only found incidentally on diagnostic imaging. Hence, it constitutes a classic pitfall in the diagnosis of false right pneumoperitoneum. We deem interesting to report a case of Chilaiditi syndrome in a 44-year-old patient with no significant history who was admitted at emergency department for abdominal trauma following a road accident.

关键词： Chilaiditi Interposition Colon Small Intestine Diaphragm Liver Imaging

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The Method of Mixtures Design for the Formulation of the Pastes Intended for Self-Compacting Concrete

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材料科学与工程（中英文A版） 2013年第6期3卷 415-420页

作者： mustapha Khadir Guellil Fouad Ghomari Sidi Mohammed El Amine Boukli Hacene Omar taleb EOLE Laboratory BP230 Depatement of Civil Engineering University of Tlemcen FT Tlemcen 13000 Algeria

Several studies have shown that the rheological behavior of self-compacting concrete (SCC) is governed by the paste which composes. Consequently, the paste is privileged over gravel in the BAP. In this context, several pastes based on cement and limestone fillers were made in order to deduce an experimental domain in which these mixtures best satisfy to desired criteria with respect to the fluidity and stability of a self-compacting paste. The visual aspect has allowed first of all to check the consistency of the mixture. The workability and fluidity were then estimated, respectively, from the mini-slump cone test and flow test marsh cone. These pastes have been the subject of mixture design based on a polynomial model guaranteeing maximum information while reducing the number of laboratory tests. The results found and treated by the software "STATISTICA" are represented by ternary diagrams linking the components of the self-compacting paste, namely cement, fillers, water and plasticizer with spreading out and the time flow responses which brings out the preponderant constituent of the self compacting paste. The same diagrams also allowed us to optimize the self compacting paste composition necessary to the formulation of BAP.

关键词：自密实混凝土混合物设计方法免烧砖配方多项式模型流变行为流量测试

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