排序方式: 共有14条查询结果,搜索用时 15 毫秒
1.
Reza Teimuri-Mofrad Mahdi Gholamhosseini-Nazari Elmira Payami Somayeh Esmati 《Research on Chemical Intermediates》2017,43(12):7105-7118
We report synthesis of silica nanospheres containing ferrocene-tagged imidazolium acetate (SiO2@Im-Fc[OAc]) as efficient heterogeneous nanocatalyst for synthesis of naphthopyran derivatives under solvent-free conditions, based on modification of nano SiO2 by ionic liquid with ferrocene tags and subsequent anion metathesis reaction. The synthesized novel nanocatalyst (SiO2@Im-Fc[OAc]) was systematically characterized using Fourier-transform infrared spectroscopy, energy-dispersive X-ray spectroscopy, X-ray diffraction analysis, and field-emission scanning electron microscopy. The catalytic activity of (SiO2@Im-Fc[OAc]) was tested in one-pot three-component reaction of aromatic aldehydes, malononitrile, and 2-naphthol for facile synthesis of naphthopyran derivatives. To achieve high catalytic efficacy, the effects of various reaction parameters such as temperature, amount of catalyst, type of solvent, etc. were investigated. Furthermore, recovery and reuse of the nanocatalyst several times was demonstrated without appreciable loss in catalytic activity. The presented protocol offers several advantages, including green and ecofriendly nature, operational simplicity, higher yield, and easy recovery and reuse of the nanostructured catalyst. The workup of these very clean reactions involves only recrystallization of the product from ethanol and recovery of the catalyst by filtration. 相似文献
2.
Poly (ferrocenyl glycidyl ether) was synthesized by polymerization of 2-[(4-ferrocenylbutoxy)methyl]oxirane (FcEpo) using toluene solution of methylaluminoxane as the catalyst. Copolymerization of 2-[(4-ferrocenylbutoxy)methyl]oxirane with epichlorohydrin was used for the synthesis of another ferrocenyl based poly (epichlorohydrin). Ferrocenyl based poly (glycidyl azide), GAP, was synthesized by treatment of sodium azide with this copolymer in DMF as solvent at room temperature. The synthesized ferrocenyl based polymers were characterized by FT-IR, 1HNMR, UV–Vis, TGA, DSC and GPC analysis. The UV–Vis spectra of synthesized polymers show the absorption band of ferrocene moiety at about 450 nm. The TGA and DSC analysis show that poly (ferrocenyl glycidyl ether) has good thermal stability. The TGA analysis shows that the copolymerization of 2-[(4-ferrocenylbutoxy)methyl]oxirane with epichlorohydrin improved the thermal stability of the copolymer. The GPC analysis of poly (ferrocenyl glycidyl ether), ferrocenyl based poly (epichlorohydrin) and Ferrocenyl based poly (glycidyl azide) show the PDI between 1.14–1.17. The electrochemical behavior of synthesized polymers was investigated by cyclic voltammetry (CV) measurements. The CV curves of synthesized polymers show good electrochemical performance and there is one redox system with the single-electron reversible reaction that associated with ferrocene moiety in polymers structure. The anodic and cathodic peak currents increased with scan rate confirmed redox reactions in the system are kinetically fast diffusion-controlled reactions. 相似文献
3.
Teimuri-Mofrad Reza Ahadzadeh Iraj Gholamhosseini-Nazari Mahdi Esmati Somayeh Shahrisa Aziz 《Research on Chemical Intermediates》2018,44(4):2913-2927
Research on Chemical Intermediates - In this research, for the first time, aminonaphthol derivatives were introduced as efficient corrosion inhibitors. A linear polarization method was employed to... 相似文献
4.
Keshvar Rahimpour Ali Shafagh-Azar Hassan Abbasi Amir Mohammad-Gholizadeh Zeinab Hezarkhani Reza Teimuri-Mofrad 《应用有机金属化学》2020,34(6):e5633
A ferrocenyl-based, chromophore-containing 1-indanone derivative was synthesized through crotonic condensation between 4-chlorobutylferrocenecarboxaldehyde and 5,6-dimethoxy-1-indanone followed by the nucleophilic substitution of chlorine atom of the obtained dyad with different aromatic and aliphatic amines. The electrochemical and optical properties of the synthesized compounds were investigated to explore the relationship between their structures and optical and electrochemical properties. The bandgaps determined from optical absorption spectra ranged from 2.05 to 2.15 eV. The important electrochemical parameters, including the peak potential separation, peak current ratios, and the dependence of peak currents on the scan rate, were studied. Results showed an electrochemically reversible redox system with diffusion-controlled redox process for the synthesized compounds. The study of quantum chemistry was performed on the synthesized compounds using the density functional theory approach. The B3LYP method and 6-311 G(d) basis set were used for optimizing the structures in the gas phase. The theoretical and experimental results show that these compounds can be considered as candidates to be used in optical applications. 相似文献
5.
In this paper, we report the green synthesis of 1-(4-ferrocenylbutyl)piperazine chemically grafted rGO (P.Fc/rGO) as a battery-type supercapacitor electrode material. For this purpose, initially, the ability of the aqueous Damson fruit extract is investigated in the reduction reaction of graphene oxide (GO). 1-(4-ferrocenylbutyl)piperazine (P.Fc) is synthesized via nucleophilic substitution reaction of piperazine with as-synthesized 4-chlorobutylferrocene. In continue, P. Fc is incorporated to GO by ring-opening reaction of epoxide groups on the GO surface. In the next step, the modified reduction method by aqueous Damson fruit extract was used to prepare the P.Fc/rGO from P.Fc/GO. The prepared materials were characterized by various techniques including FT-IR, Uv–vis, XRD, SEM, EDX, and BET. N2 adsorption–desorption data of P.Fc/rGO nanocomposite shows that the surface area is 37.746 m2 g−1. The capability of P.Fc/rGO nanocomposite for using as an energy storage electrode material in battery-type supercapacitor was examined by investigation of its electrochemical behavior by CV, EIS, and GCD measurements. The charge storage capacity of 1,102 mAh g−1 is achieved at 2.5 A g−1. This nanocomposite shows 89% retention of charge storage capacity after 2000 CV cycles. 相似文献
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7.
Kazem D. Safa Afsaneh Zeinolabedini Hassan Abbasi Reza Teimuri-Mofrad 《Journal of the Iranian Chemical Society》2013,10(3):447-452
A three-component efficient procedure is described for the synthesis of α-aminonitriles containing bis(trimethylsilyl)ethenyl groups from 4-[2,2-bis(trimethylsilyl)ethenyl]benzaldehyde (1), aromatic amines and trimethylsilyl cyanide (TMSCN). Reactions have been studied in the presence of various Lewis acids as catalysts or in ionic liquids under mild conditions. Compound (1) was obtained via Peterson olefination of terephthaldehyde with tris(trimethylsilyl)methyllithium, (Me3Si)3CLi, in THF at 0 °C. 相似文献
8.
Gholamhosseini-Nazari Mahdi Esmati Somayeh Safa Kazem D. Khataee Alireza Teimuri-Mofrad Reza 《Research on Chemical Intermediates》2019,45(4):1841-1862
Research on Chemical Intermediates - In this study, a novel magnetically recoverable Fe3O4@SiO2-BenzIm-Fc[Cl]/ZnCl2 nano-particle was synthesized using a simple chemical coprecipitation approach.... 相似文献
9.
Reza Teimuri-Mofrad Roghaye Nikbakht Mahdi Gholamhosseini-Nazari 《Research on Chemical Intermediates》2016,42(10):7501-7511
An efficient and improved process for the synthesis of novel 1-indanones derivatives has been developed. In the first step of the presented new process, 4-bromobenzaldehyde reacts with 5, 6-dimethoxy-2, 3-dihydro-1H-inden-1-one by N-arylation of corresponding compounds with a variety of aliphatic and aromatic amines to produce a novel category of 1-indanones as the final step. Comparison of this newly designed method with conventional methods show that our method is much more efficient in producing a higher total yield. This innovative synthesis methodology offers several advantages, among which the consumption of inexpensive reagents and the resulting higher total yields of final products are of its remarkable points. 相似文献
10.
Ali Reza Kazemizadeh Nahid Shajari Reza Shapouri Neda Adibpour Reza Teimuri-Mofrad 《Journal of the Iranian Chemical Society》2016,13(7):1349-1355
An isocyanide-based multicomponent reaction between cinnamic acid derivatives or 3-phenyl-2-propynoic acid, (N-isocyanimino)triphenylphosphorane, ferrocenecarbaldehyde, and dibenzylamine has been reported in excellent yields for the preparation of some new ferrocenyl-containing 1,3,4-oxadiazole derivatives. The anti-brucella activities of the products are investigated in in vitro and in vivo assays. 相似文献