S8-Mediated Decarboxylative Cyclization of 2-Nitrophenols with Arylacetic Acid: Synthesis of Benzoxazoles
Publication date: Available online 21 March 2019Source: Journal of Saudi Chemical SocietyAuthor(s): Haifeng Gan, Dalong YangAbstractA concise, metal-free protocol has been established for the preparation of 2-arylbenzoxazoles from 2-nitrophenols and arylacetic acids via a sulfur-mediated redox decarboxylative cyclization reaction. The reactions proceeded in moderate to good yields, and gram-scale is suitable.Graphical abstract (Source: Journal of Saudi Chemical Society)
Source: Journal of Saudi Chemical Society - March 22, 2019 Category: Chemistry Source Type: research
Facile, Single-pot preparation of nanoporous SiO2 particles (carrier) with AgNPs at core and crust for controlled disinfectant release
This study demonstrates a novel, facile and one-pot approach to synthesize silica nanoparticles with silver at core and crust (SiNP-AgCC). A modified Stöber method was used to make SiNP-AgCC. A significant reduction in the size of SiO2 nanoparticles was seen, with 2-5 nm AgNPs being uniformly distributed on the surface and 10-20 nm AgNPs in the center. A typical mesoporous SiO2 particles (SiNP) produced using the Stöber method was transformed to nanoporous SiO2 by this modified Stöber method. Nanoporous SiO2 particles with silver in the center are advantageous for slow and consistent Ag+ release, which was confirmed by ...
Source: Journal of Saudi Chemical Society - March 12, 2019 Category: Chemistry Source Type: research
Synthesis, characterization, electrochemical behavior and antioxidant activity of new copper(II) coordination compounds with curcumin derivatives
Publication date: Available online 11 March 2019Source: Journal of Saudi Chemical SocietyAuthor(s): Mirela Călinescu, Mălina Fiastru, Daniela Bala, Constantin Mihailciuc, Ticuţa Negreanu-Pîrjol, Bogdan JurcăAbstractFive new copper(II) coordination compounds were prepared by template synthesis, using curcumin, 2-hydrazinobenzothiazole and metal salt (copper chloride, bromide, acetate and nitrate) in 1:2:1 and 1:2:2 molar ratio. The complexes were characterized by elemental and thermogravimetric analysis, IR, UV-Vis and mass spectroscopic methods and cyclic voltammetric studies. On the basis of physico-chemical measurem...
Source: Journal of Saudi Chemical Society - March 12, 2019 Category: Chemistry Source Type: research
SBA‐15@ABA-M (M = Cu, Ni and Pd): Three efficient, novel and green catalysts for oxidative coupling of thiols under mild reaction conditions
Publication date: Available online 23 February 2019Source: Journal of Saudi Chemical SocietyAuthor(s): Taiebeh Tamoradi, Mohammad Ghadermazi, Arash Ghorbani-ChoghamaraniAbstractIn the present study, oxidative coupling of thiols was carried out using immobilized Cu, Ni and Pd complexes on SBA-15 mesostructured as novel and green heterogeneous catalysts under mild reaction conditions. These supported complexes were characterized by FT-IR, XRD, TEM, TGA, EDX, ICP and BET techniques. These nanohybrid robust catalysts have outstanding advantages such as facile synthesis, use of green medium, high surface area, easy separation a...
Source: Journal of Saudi Chemical Society - March 4, 2019 Category: Chemistry Source Type: research
Editorial Board
Publication date: March 2019Source: Journal of Saudi Chemical Society, Volume 23, Issue 3Author(s): (Source: Journal of Saudi Chemical Society)
Source: Journal of Saudi Chemical Society - February 28, 2019 Category: Chemistry Source Type: research
In-situ oxidative polymerization of aniline on hydrothermally synthesized MoSe2 for enhanced photocatalytic degradation of organic dyes
Publication date: Available online 26 February 2019Source: Journal of Saudi Chemical SocietyAuthor(s): Honey Mittal, Arun Kumar, Manika KhanujaAbstractIn this paper, we report synthesis of MoSe2-polyaniline by in-situ polymerization method. Simple and eco-friendly hydrothermal technique is used for the synthesis of MoSe2. Sample characterizations were done using Field Emission Scanning Electron Microscopy (FESEM), X-Ray Diffraction (XRD), UV-vis Spectroscopy, Fourier Transform Infra-Red Spectroscopy (FTIR) and Raman Spectroscopy. Photocatalytic dye degradation was performed using nanocomposite on Methylene blue (MB) and Me...
Source: Journal of Saudi Chemical Society - February 27, 2019 Category: Chemistry Source Type: research
SBA‐15@ABA-M (M=Cu, Ni and Pd): Three efficient, novel and green catalysts for oxidative coupling of thiols under mild reaction conditions
Publication date: Available online 23 February 2019Source: Journal of Saudi Chemical SocietyAuthor(s): Taiebeh Tamoradi, Mohammad Ghadermazi, Arash Ghorbani-ChoghamaraniAbstractIn the present study, oxidative coupling of thiols was carried out using immobilized Cu, Ni and Pd complexes on SBA-15 mesostrucrured as novel and green heterogeneous catalysts under mild reaction conditions. These supported complexes were characterized by FT-IR, XRD, TEM, TGA, EDX, ICP and BET techniques. These nanohybrid robust catalysts have outstanding advantages such as facile synthesis, use of green medium, high surface area, easy separation a...
Source: Journal of Saudi Chemical Society - February 23, 2019 Category: Chemistry Source Type: research
The preparation and properties of polyimide films modified by octa(aminopropylsilsesquioxane)
Publication date: Available online 22 February 2019Source: Journal of Saudi Chemical SocietyAuthor(s): Benbo Liu, Bin Zhang, Xumeng Wang, Xuanying Chen, Guangxin GuAbstractA number of polyimide films incorporated with different amounts of octa(aminopropylsilsesquioxane) (POSS-NH2) were prepared from 1,2,4,5-Benzenetetracarboxylic anhydride, 4,4'-Oxydianiline and POSS-NH2. The structure and properties of the hybrid polyimide films were characterized and evaluated. It is found that, compared with pure polyimide without POSS-NH2, the thermal stabilities and electrical capabilities of hybrid polyimide films are improved. Meanw...
Source: Journal of Saudi Chemical Society - February 22, 2019 Category: Chemistry Source Type: research
Green synthesis and application of nanoscale zero-valent iron/rectorite composite material for P-chlorophenol degradation via heterogeneous Fenton reaction
This study has extended the application of NZVI/rectorite as environment function material for the removal of P-chlorophenol from the environment. (Source: Journal of Saudi Chemical Society)
Source: Journal of Saudi Chemical Society - February 14, 2019 Category: Chemistry Source Type: research
Synthesis of Polyglycolic Acid Copolymers from Cationic Copolymerization of C1 Feedstocks and Long Chain Epoxides
In this study; to improve on the physical properties of PGA, such as melting temperature and solubility, polymerizations of trioxane, CO and a minor amount of epoxides with long side chains were performed under the same reaction condition as PGA homopolymer synthesis (DCM solvent, at 800 psi, with triflic acid catalyst, reaction time of 72 h). The results have shown that optimum polymerizations were achieved at lower reaction temperatures than that of PGA homopolymer synthesis (110 oC versus 170 oC). The melting temperatures of all copolymers are lower, and the colors of the copolymers have become lighter than that of PGA ...
Source: Journal of Saudi Chemical Society - February 12, 2019 Category: Chemistry Source Type: research
Highly sensitive SERS monitoring of catalytic reaction by bifunctional Ag-Pd triangular nanoplates
Publication date: Available online 10 February 2019Source: Journal of Saudi Chemical SocietyAuthor(s): Jie Yang, Xin-Yue Wang, Ling Zhou, Fan Lu, Ning Cai, Ju-Mei LiAbstractSurface-enhanced Raman spectroscopy (SERS) can attain the “fingerprint” information of molecules from their vibrational transitions for detecting chemical species and thus displays extraordinary application value in studying chemical reaction mechanism catalyzed by noble metal nanoparticles in recent years. Herein, we successfully fabricated bifunctional Ag-Pd triangular nanoplates with integration of catalytic and SERS activities, using Ag triangul...
Source: Journal of Saudi Chemical Society - February 10, 2019 Category: Chemistry Source Type: research
Pyridine solvated dioxouranium complex with salen ligand: Synthesis, characterization and luminescence properties
Publication date: Available online 10 February 2019Source: Journal of Saudi Chemical SocietyAuthor(s): Mohammad Azam, Saud I Al-Resayes, Agata Trzesowska-Kruszynska, Rafal Kruszynski, S.F. Adil, N.K. LokanathAbstractA new derivative of dioxouranium(VI) salen complex, [UO2(L)(pyridine)], where [L =N,N'-Bis(2-hydroxybenzylidene)-2,2-dimethyl-1,3-propanediamine] is synthesized and characterized by elemental analysis (C, H, N), FT-IR, ESI-MS spectrometry, UV/Vis, fluorescence, 1H and 13C NMR spectroscopy and thermal gravimetric (TG) study. Furthermore, the single crystal X-ray diffraction measurements of the complex were carri...
Source: Journal of Saudi Chemical Society - February 10, 2019 Category: Chemistry Source Type: research
Hydrothermal synthesis of MoS2 with controllable morphologies and its adsorption properties for bisphenol A
Publication date: Available online 31 January 2019Source: Journal of Saudi Chemical SocietyAuthor(s): Lijun Luo, Miao Shi, Shimin Zhao, Wei Tan, Xi Lin, Hongbin Wang, Fengzhi JiangAbstractThe effect of preparation conditions (molar ratio of S/Mo, hydrothermal temperature and time) on the morphologies of MoS2 were investigated. The as-synthesized materials were characterized by x-ray diffraction (XRD), field emission scanning microscopy (FESEM), transmission electron microscopy (TEM), X-ray photoelectron spectroscopy (XPS), Raman spectra and Brunauer-Emmett-Teller (BET) surface area measurement. Results showed that the thre...
Source: Journal of Saudi Chemical Society - January 31, 2019 Category: Chemistry Source Type: research
Metal- and acid-free, TBN-mediated direct CH nitration of arenes
Publication date: Available online 18 January 2019Source: Journal of Saudi Chemical SocietyAuthor(s): Guangqiang Xu, Li Zhou, Chengdong Lv, Mo Xian, Qinggang WangAbstractA metal-free, acid-free, direct and eco-friendly nitration methodology has been developed. A tert-butyl nitrite efficiently promotes the direct CH nitration of electron-rich arenes with good to excellent yields and regioselectivities. The practical utility of this protocol has been demonstrated in gram-scale nitration of crown ether and mono nitration of Sesamin. A plausible free radical mechanism is proposed based on detailed experimental observations.Gra...
Source: Journal of Saudi Chemical Society - January 26, 2019 Category: Chemistry Source Type: research
A Review of Recent Advances in Catalytic Combustion of VOCs on Perovskite-type Catalysts
Publication date: Available online 24 January 2019Source: Journal of Saudi Chemical SocietyAuthor(s): Meng Zang, Chaocheng Zhao, Yongqiang Wang, Shuiquan ChenAbstractAlong with the rapid development of industry, VOCs gradually move into the spotlight, and now become a kind of harmful environmental pollutants that cannot be overlooked. This paper introduces the hazards of VOCs and the common catalytic combustion catalysts, noble metal catalysts and non-noble metal catalysts, for the elimination of VOCs. Perovskite catalysts, as one of the non-noble catalysts, play an important role in the field of catalytic combustion in re...
Source: Journal of Saudi Chemical Society - January 24, 2019 Category: Chemistry Source Type: research
