16^th European Organic Chemistry Congress August 26-27, 2020 London, UK

Biography:

Dr. Abdulraheem Safar Ali Almalki received his master and Ph.D. degrees from the University of Sheffield (October 2011 – September 2015) in the field of polymer sciences more precisely in the field of solar cells. He subsequently returned to university of Taif, Faculty of Science, Department of Chemistry, KSA as an assistance professor. He was responsible for conducting fundamental research into polymeric materials these include conjugated polymers, composites material, nano-scale materials and hybrid polymers for organic electronics and biological applications. A.S.A. Almalki has many publications in peer-reviewed scientific journals. He is an expert in the trend of design, synthesis and exploitation of the unique physical properties of organic conjugated polymers for application in bulk-heterojunction (BHJ)

Abstract:

The present work aimed to prepare some compounds for use in pigmented solar cells based on charge transfer (CT) complexation. For this purpose, first, several derivatives of 1,8–naphthalimide and benzanthrone fluorescent dyes were synthesized. Secondly, the synthesized fluorescent dyes were bonded to picric acid (PA) acceptor via CT interaction in methanol solvent at room temperature. Then, the synthesized CT complexes were stoichiometrically, spectroscopically and thermally characterized. The results obtained from CHN elemental analyses and spectrophotometric titrations indicated the formation of CT complexes with a molar ratio of 1:1 between the PA and each dye. The spectroscopic and physical parameters (KCT,εmax, ECT, f, μ, RN, IP, and ΔG°), the band gap energy (Eg), and the kinetic–thermodynamic parameters (E*⁎,A, ΔS⁎, ΔH⁎ and ΔG⁎) were calculated for each CT product in methanol solvent at room temperature. IR results indicated that the complexation between each dye and PA acceptor occurs through π → π* and proton transfer interactions.

Biography:

Abstract:

The physicochemical characterization of coal samples from deposits provides mineral distribution and composition data for utilization by scientists and policy makers. The characterization of coal samples of Ihioma coal deposits in Imo state, Nigeria was performed using proximate and ultimate analyses. XRD and ICP-AES were used to characterize the coal samples for potential energy utilization. Proximate analyse determined fixed carbon content and volatile matter to be 51.5% and 38.5% respectively, an indication of a good coking material. The carbon % in the ultimate analyses was at 64.6% while O2, H2, N2 and S were all below 5% which showed the coal potential to emit lower emissions. ICP-AES chemical composition determined SiO2 to be the most abundant followed by Na2O. The XRD peaks classified Ihioma coal as having Quartz, Albite and Haematite. Material mapping by XRD showed that Al and Si were evenly distributed while S, Co and Fe were unevenly distributed. Thus Ihioma coal has features of ignition and can undergo spontaneous combustion, hence a good source of thermal energy. Results also confirmed Ihioma coal as a potential material for pigments and can be utilized for ceramics, pottery andornamentals.

Biography:

Abstract:

The oxidation of propane-1,3-diol by potassium permanganate in aqueous solution have been studied at λ_max 525 nm. The rate of the reaction has been found to  increase with increase in [KMnO₄] and [Propane-1,3-diol]. The reaction shows first order dependence both on [KMnO₄] and [Propane-1,3-diol] and independent on the  ionic strength of the solution. The (kJ mol^-1), (kJK^-1mol^-1)(kJ mol^-1)   were 24.98, -0.22 and 90.50 respectively.  Negative entropy of activation revealed an  ordered transition state for the reaction. Spectroscopic studies showed the product of the  reaction to be 3-hydroxyl-propanal. A plausible mechanism in consonance with  spectroscopic studies and kinetic result was proposed.

Biography:

Dr Ganiyat K. Oloyede had her PhD in Medicinal/Natural Products Chemistry in 2005 at the University of Ibadan Nigeria where she is currently a Senior Lecturer and PGDE from National Open University of Nigeria (2015). She obtained a Certificate in Conflict Analysis Course (Education and Training Online) from The United State Institute of Peace (2015). A recipient of many awards and member of many professional bodies, she has over 65 published journals to her credit. She has attended many workshops and conferences and delivered papers in fields ranging from food, pharmaceutical and Natural product chemistry both locally and internationally

Abstract:

This research was aimed at synthesizing Mannich bases of piperidine and p-chloroaniline derivatives and investigating their antioxidant and antimicrobial activities since report has it that Mannich bases possessing electron withdrawing group show good anti-oxidant, antimicrobial, anti-cancer and anti-tumour properties. The synthesized compounds were characterized by Nuclear Magnetic Resonance (NMR), Infra red (IR) and Ultra/Violet-Visible (UV-V) spectroscopy. 2,2-diphenyl-1-picrylhydrazyl (DPPH) radical and Agar Well diffusion methods were used for the antioxidant and antimicrobial screening respectively.

Eight Mannich bases namely N,3-diphenyl-3-(piperidin-1-yl)propanamide (MB1), 3-((4-chlorophenyl)amino)-2-hydroxy-1,2,3-triphenylpropan-1-one (MB2), 2-((3-((4-chlorophenyl)amino)-3-phenylpropanoyl)oxy)benzoic acid (MB3), 3-(((4-chlorophenyl)amino)(phenyl)methyl)-5,7-dihydroxy-2-(4-hydroxyphenyl)chroman-4-one (MB4), 3-((4-chlorophenyl)amino)-3-(4-hydroxy-3-methoxyphenyl)-1-phenylpropan-1-one (MB5), 3-((4-chlorophenyl)amino)-N,3-diphenylpropanamide (MB6), benzoic 2-((4-chlorophenylamino)methyl)benzoic peroxyanhydride (MB7) and 3-(4-chlorophenylamino)-1,3-diphenylpropan-1-one (MB8) were synthesized. NMR confirmed the presence of the N-H aromatic stretch, in the range δ 4.00. IR also confirmed the presence of C=O, O-H and N-H typical of the Mannich bases. The Ultra/Violet-Visible absorption spectra for the synthesized compounds revealed that the compounds are aromatic. In vitro antioxidant screening of the compounds by DPPH free radical scavenging method showed that the compounds possessed significant antioxidant activity when compared with standards vitamin C, and butylatedhydroxylanisole (BHA). MB3 (73.56%, 71.17%), MB4 (78.83%, 75.25%), MB5 (73.06%, 70.58%), MB6(74.55%, 72.47%) and MB8 (78.73%, 74.65%) showed significant inhibition at 1.0 mg/mL and 0.5 mg/mL respectively. MB1, MB2 and MB3 shows potent antimicrobial activity while MB4 – MB8 showed moderate activity, against bacterial and fungal strains when compared with the standards, Gentamicin and Tioconazole for bacteria and fungi respectively. This research work has therefore provided information about the spectroscopic properties, anti-oxidant and antimicrobial activities of new Mannich bases

Biography:

Hong-Ngoc PHAM received her master degree in Drug Development in 2016 from Vietnam-France University (Vietnam). She joined Laboratoire de Chimie Physique Macromoleculaire (LCPM), Université de Lorraine (France) in 2017 as PhD student in Organic Chemistry. Her research focused on the synthesis of heterocycle-based peptidomimetics for different biological applications. She expects to work as a researcher and teaching assisant in university after gaining the PhD diploma.

Abstract:

 3,4-dihydro-2H-1,4-benzoxazine and its derivatives were described as promising candidates for many choices of therapeutic applications. This fascinating class of heterocyclic compounds can exhibit various biological properties such as antibacterial1, cardiovascular protector2, anti-hypertensive3, anti-angiogenesis4, anti-thrombin5 or neuroprotective activities6. Due to those potential effects, 3,4-dihydro-2H-1,4- benzoxazine became an attractive target to develop. However, because of receptor selectivity, chirality now becomes a top subject in chemistry. Within one molecule such as levofloxacin or thalidomide, different chirality may exhibit different pharmacological activities.

As a result, we raised an awareness about the obtainment of 3,4- dihydro-2H-1,4-benzoxazine enantiopure analogues but there were not many reports in the literature brought up an effortless procedure to achieve it. Therefore, we are making an effort to design a straightforward way to directly acquire the chiral ethyl 3,4-dihydro-2H- 1,4-benzoxazine-2-carboxylate. As our targeted compound could be easily prepared by allowing appropriate aminophenol reacts with ethyl 2,3-dibromopropionate, this reaction always lead to racemic 1,4- benzoxazine as the main product in high yield. Our desire is to attempt chiral (R)- or (S)-ethyl-2,3-dibromopropionate which had never been described in the literature in order to replace the role of racemic one and (R)- or (S)-ethyl-3,4-dihydro-2H-1,4-benzoxazine-2-carboxylate by two strategies: enantioselective synthesis and preparative enantioseparation of racemate using different chiral stationary phases (CSPs). Once ethyl-3,4-dihydro-2H-1,4-benzoxazine-2-carboxylate enantiopure is obtained, it could be easily to introduce as new β-amino acid analogs in peptidic chains by coupling O- and N-terminal extremities with different α-amino acids. 

Biography:

Abstract:

Palladium-catalyzed coupling reactions offer efficient and simple procedures leading to important aryl compounds, such as acids, amides, ketones, or biaryls [1-3]. Benzoic acids, amides, and ketones are common structural motifs found in many natural products, pharmaceuticals, and agrochemicals [4]. Although palladium is a metal of choice in the Suzuki–Miyaura and carbonylative coupling reactions due to its very high efficiency, searching for new palladium catalysts is still a challenge. Not only complexes but also palladium nanoparticles (Pd NPs) should be taken into account [5-6]. In our studies, Pd/DNA catalysts were prepared in a mixed H2O/EtOH solvent using palladium precursors, Pd(OAc)2 and PdCl2, in different dosages and salmon fish sperm DNA. As prepared, the Pd/DNA contained palladium nanoparticles of various sizes and morphologies, active in the Suzuki–Miyaura cross-coupling of various aryl bromides with phenylboronic acids. The catalyst was recovered by simple phase separation and then reused in seven consecutive cycles with a high activity. For the first time, Pd/DNA was applied with very good results in the carbonylative coupling of iodobenzene, leading to amides, benzoic acid, or benzophenone, depending on the kind of nucleophile used. The aminocarbonylation of iodobenzene with n-hexylamine was performed with excellent selectivity using Mo(CO)6 as a CO source, while a mixture of products was formed with gaseous CO. The recovered Pd/DNA catalyst was used in the next four runs with high activity..

Biography:

Mr. Muhammad Usman, Former Director General of Agricultural Research System, Government of Pakistan who retired from service after a spotless career of about 35 years with senior level experience on research and development of agricultural industry with regard to food Chemistry, food science and Nutrition, renewable energy, sustainable agriculture of oil seed, cereal, fruits, vegetable and other cash crops.Mr. Usman is basically an agricultural scientist with specialization of agricultural and food chemistry working as plant breeder with regard to the yield and quality of various agricultural crops as well as nutrition. Mr. Usman has also worked on Biosciences of lipid’s, food legumes crops and Bio-energy.

Abstract:

The aim of presentation consist of chemistry, organic chemistry, industry, global poverty and hunger were studied and reported that Chemistry particularly European organic chemistry is the major industry for the development of health, basic need of daily life, create employment, generate income, stronger economy, reducing financial crises, global Poverty and hunger in the developing countries of the world particularly in south Asia. The study reported that chemistry is the science of composition, structure, properties and reaction of mater, especially of atomic and molecules systems. In a very simple words, it is the composition, properties and reaction of esbstance. The different branches of chemistry each of which has the different area of study consist of i. analytical chemistry ii. Physical chemistry iii. Organic chemistry iv. Inorganic chemistry v. biochemistry vi. Food chemistry vii. environmental chemistry viii. Agricultural chemistry  ix. Chemical engineering x. geo chemistry xi. Nuclear chemistry and xii. Clinical chemistry the most important branch of chemistry are European organic chemistry which is consider as the major industry. The study reported that organic chemistry specifically studies compounds that contain the element carbon. Carbon has many unique properties that allow it to form complex chemical bonds and very large molecules. European Organic chemistry is known as the “chemistry of life” because all of the molecules that make up living tissue have carbon as part of their makeup. The study further reported that organic chemistry is definitely one of a typical most significant in chemistry which covers the responses, equation and diagrams of each chemical compound, that are thousand times more

nonorganic ones. It is well covers an immense strain of molecules including those of industrial chemical compounds such as plastics, rubber, dyestuffs, narcotics and solvents. Similarly, the study also reported that inorganic chemistry studies materials such as metals and gases that do not have carbon as part of their makeup. The study also reported that The total number of countries are available in the world are 224, consist of 49, developed countries 49, 149 developing countries, 4 observers states, 8 state with partial recognition and 14 unrecognized states but the South Asia comprises the countries of Pakistan, Bangladesh, India, Bhutan, Maldives, Nepal and Sri-Lanka South Aisa is about one fifth of the world’s population, which is considered as the most densely populated region in the world. In the light of the above study, the industry of organic chemistry should be commercialized for the development of health, basic need and daily use of life, absorbing millions of technical and non-technical people, like engineers, doctors, agriculturist etc, generate income, create employment, increase the job, stronger economy, reduce financial crises, global poverty and hunger in the developing countries of the world like South Asia particularly in Pakistan.

Biography:

Dr. Mohamed Selim is a postdoctoral scholar at the School of Chemical Engineering and Light Industry, Guangdong University of Technology, Guangzhou, 510006, PR China. He earned his B.Sc. (2006) at the Chemistry Department of Menoufiya University, Egypt and his M.Sc. (2012) in Organic Chemistry at the Faculty of Science of Menoufiya University, Egypt. He earned his Ph.D. (2015) in Polymer Technology and Materials Science at the organic Chemistry Department of Ain Shams University in Egypt. Since then, he has occupied different positions. He earned a Postdoctoral Scholar at the Technical Institute of Physics and Chemistry, University of Chinese Academy of Science, Beijing, China. He participated and attended numerous national and international events. He is a member in many scientific organizations and acts as a reviewer and referee in the field of anticorrosive paints, polymer technology and nanocomposites for different international journals and organizations

Abstract:

Graphene oxide nanosheets decorated with one-dimensional metal oxide composites represent hotspot materials for designing sustainable vegetable oil-based nanocomposite coatings. In this paper, we have reported that graphene oxide nanosheets decorated with β–MnO₂ nanorods (GO/MnO₂ hybrid) were newly synthesized via a single step chemical deposition system. Linseed oil, which meets many principles of green chemistry, was used to design biobased alkyd matrix with hyperbranched moiety via a single-step polyesterification method. An advanced ternary nanocomposite series based on linseed oil alkyd filled with GO/β–MnO₂ NRs was developed via a solution casting technique, applied on carbon steel, and dried through an auto-oxidation mechanism. The structures, sizes and morphologies of designed polymeric nanocomposites and nanofillers were elucidated using various techniques such as FT-IR, NMR, XRD, FE-TEM, FE-SEM and XPS. Nano-GO with sheet-thickness Ë‚ 2 nm as well as single-crystalline β–MnO₂ NRs with 20-30 nm mean diameter-size, Ë‚ 1 µm length, and exposed with grown along [110] growth orientation of wurtzite structure were synthesized through controlled regimes. Surface heterogeneity, elasticity, non-wettability and corrosion-resistance features, are among the merits of developed composite. The synergetic effects of distributing different concentrations of GO/β–MnO₂ in the alkyd matrix were studied to tune the coating mechanical and protective properties. The coatings' mechanical durability and thermal resistivity were investigated using impact, mandrel bend, cross-hatch and abrasion tests as well as thermogravimetric analysis (TGA) technique. The surface and anticorrosion features of the ternary nanocomposites were studied through water contact angle, atomic force microscopy, scanning electron microscope, and salt-fog experiment (in 5% NaCl solution). The highest reinforcing improvement with thorn-like protrusions roughness was achieved through insertion of 2.5 wt. % GO/β–MnO₂ NRs fillers in the matrix. This fascinating biobased nanostructure coating provides a promising alternative for replacing petro-based anticorrosive coatings for the development of a sustainable future environment.

Biography:

Dr. Mohamed Selim is a postdoctoral scholar at the School of Chemical Engineering and Light Industry, Guangdong University of Technology, Guangzhou, 510006, PR China. He earned his B.Sc. (2006) at the Chemistry Department of Menoufiya University, Egypt and his M.Sc. (2012) in Organic Chemistry at the Faculty of Science of Menoufiya University, Egypt. He earned his Ph.D. (2015) in Polymer Technology and Materials Science at the organic Chemistry Department of Ain Shams University in Egypt. Since then, he has occupied different positions. He earned a Postdoctoral Scholar at the Technical Institute of Physics and Chemistry, University of Chinese Academy of Science, Beijing, China. He participated and attended numerous national and international events. He is a member in many scientific organizations and acts as a reviewer and referee in the field of anticorrosive paints, polymer technology and nanocomposites for different international journals and organizations

Abstract:

Graphene oxide nanosheets decorated with one-dimensional metal oxide composites represent hotspot materials for designing sustainable vegetable oil-based nanocomposite coatings. In this paper, we have reported that graphene oxide nanosheets decorated with β–MnO₂ nanorods (GO/MnO₂ hybrid) were newly synthesized via a single step chemical deposition system. Linseed oil, which meets many principles of green chemistry, was used to design biobased alkyd matrix with hyperbranched moiety via a single-step polyesterification method. An advanced ternary nanocomposite series based on linseed oil alkyd filled with GO/β–MnO₂ NRs was developed via a solution casting technique, applied on carbon steel, and dried through an auto-oxidation mechanism. The structures, sizes and morphologies of designed polymeric nanocomposites and nanofillers were elucidated using various techniques such as FT-IR, NMR, XRD, FE-TEM, FE-SEM and XPS. Nano-GO with sheet-thickness Ë‚ 2 nm as well as single-crystalline β–MnO₂ NRs with 20-30 nm mean diameter-size, Ë‚ 1 µm length, and exposed with grown along [110] growth orientation of wurtzite structure were synthesized through controlled regimes. Surface heterogeneity, elasticity, non-wettability and corrosion-resistance features, are among the merits of developed composite. The synergetic effects of distributing different concentrations of GO/β–MnO₂ in the alkyd matrix were studied to tune the coating mechanical and protective properties. The coatings' mechanical durability and thermal resistivity were investigated using impact, mandrel bend, cross-hatch and abrasion tests as well as thermogravimetric analysis (TGA) technique. The surface and anticorrosion features of the ternary nanocomposites were studied through water contact angle, atomic force microscopy, scanning electron microscope, and salt-fog experiment (in 5% NaCl solution). The highest reinforcing improvement with thorn-like protrusions roughness was achieved through insertion of 2.5 wt. % GO/β–MnO₂ NRs fillers in the matrix. This fascinating biobased nanostructure coating provides a promising alternative for replacing petro-based anticorrosive coatings for the development of a sustainable future environment.

Biography:

Abstract:

This study summarizes a fundamental investigation on the removal of aluminium ions from phosphoric acid solutions onto three kind of natural raw clays issued from different Tunisian deposit’s. Equilibrium removal isotherms were measured for the three clays used. The influence of some experimental parameters such as time contact and initial concentration of phosphoric acid solutions was studied. The clays used in this study were effective for aluminium elimination, the optimum initial concentration of phosphoric acid was found to be molar and one hour of contact time was very sufficient to reach equilibrium. The experimental data of the removal equilibrium were correlated by either the Langmuir or Freundlich equations. Results indicated that the Freundlich model gave a better fit to the experimental data than the Langmuir equation for the different clays. The results of the experiments suggest that the highest degree of acid purification was achived in the first five minutes of the present batch process with an equilibrium removal rate of 82 % and a maximum adsorption capacity of 145.66 mg/g by the Gafsa raw clay.