864131-95-3Relevant academic research and scientific papers
Preparation of Fe3O4@C-dots as a recyclable magnetic nanocatalyst using Elaeagnus angustifolia and its application for the green synthesis of formamidines
Ghereghlou, Mahnaz,Esmaeili, Abbas Ali,Darroudi, Majid
, (2021/09/15)
This work describes a novel and simple procedure for successfully synthesizing formamidines by using Fe3O4@C-dots in the role of an effective and reusable catalyst throughout a solvent-free set-up. The formamidine derivatives were easily prepared through aromatic amines with triethyl orthoformate in the company of Fe3O4@C-dots. According to the experimental outcomes, the obtained formamidines in the presence of Fe3O4@C-dots exhibited good to high yield values. In the following, we distinguished the prepared catalyst by applying field emission scanning electron microscope (FESEM), transmission electron microscopy (TEM), energy-dispersive X-ray (EDX), X-ray diffraction (XRD), Fourier transform infrared (FTIR), and vibrating sample magnetometer (VSM) techniques. Furthermore, the evaluation of catalytic activity was done in the course of synthesizing formamidine derivatives. Among the advantages of this method, one can highlight the facts of solvent-free conditions, the simplicity of operation, high yields, nonacidic catalyst, and the reusability of nanocatalyst for at least five cycles.
The p: K a values of N-aryl imidazolinium salts, their higher homologues, and formamidinium salts in dimethyl sulfoxide
Cole, Marcus L.,Dunn, Michelle H.,Harper, Jason B.,Konstandaras, Nicholas,Luis, Ena T.
supporting information, p. 1910 - 1917 (2020/03/23)
A series of imidazolinium salts, their six-, seven- A nd eight-membered homologues, and the related formamidinium salts were prepared, and their pKa values were determined in DMSO at 25 °C using the bracketing indicator method. The effect of each type of structural variation on the acidity of each salt was considered, particularly noting the importance of ring size and the effect of the steric and electronic nature of the N-aryl substituents. The effect of a cyclic structure was also probed through comparing the cyclic systems with the corresponding formamidinium salts, noting the importance of conformational flexibility in the latter cases. Along with allowing choice of appropriate bases for deprotonation of these species, it is anticipated that the data presented will aid in the understanding of the nucleophilicity, and potentially catalytic efficacy, of the corresponding carbenes.
A THERANOSTIC PROBE AND ITS USE FOR TARGETING AND/OR LABELING THE EGFR KINASE AND/OR THE CELLS EXPRESSING EGFR OR ITS FAMILY MEMBERS
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Page/Page column 12-13; 15, (2020/09/08)
The present application is directed to a theranostic probe and its use for targeting and/or labeling the EGFR kinase and/or the cells expressing EGFR or its family members.
METHOD OF CARBON MONOXIDE FIXATION AND METHOD OF AMINE FORMYLATION
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Paragraph 0078; 0081-0085; 0100-0102, (2021/02/19)
The present invention relates to a method for fixing carbon monoxide in a metal-free condition and a method for formating amine using the same.
Near-Infrared Emission Induced by Shortened Pt-Pt Contact: Diplatinum(II) Complexes with Pyridyl Pyrimidinato Cyclometalates
Wang, Sheng Fu,Fu, Li-Wen,Wei, Yu-Chen,Liu, Shih-Hung,Lin, Jia-An,Lee, Gene-Hsiang,Chou, Pi-Tai,Huang, Jian-Zhi,Wu, Chih-I,Yuan, Yi,Lee, Chun-Sing,Chi, Yun
, p. 13892 - 13901 (2019/10/16)
Four diplatinum(II) complexes with the formula [Pt(pypm)(μ-Fn)]2 (2, 3a-c) bearing both a pyridine-pyrimidinate chelate and formamidinate bridge, where (pypm)H and FnH stand for 5-(pyridin-2-yl)-2-(trifluoromethyl)pyrimidi
Application of chlorodifluoromethane as C1 source for synthesis of amidine compounds
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Paragraph 0040-0041, (2019/09/17)
The invention discloses an application of chlorodifluoromethane as a C1 source for synthesis of amidine compounds. Chlorodifluoromethane can be subjected to quadrupole bond cracking under a mild condition, and valuable amidine compounds can be obtained. Water and a solvent are added in the presence of chlorodifluoromethane, the chlorodifluoromethane can be efficiently cracked into a C1 synthon, and synthesis of the amidine compounds can be realized. The synthesis method uses no transition metal, has the characteristic of being environmentally friendly, is simple to operate and can obtain the amidine compounds by one step.
Metal-free Carbon Monoxide (CO) Capture and Utilization: Formylation of Amines
Noh, Hyeong-Wan,An, Youngjoon,Lee, Seulchan,Jung, Jaehoon,Son, Seung Uk,Jang, Hye-Young
, (2019/04/26)
The capture and utilization of CO by 1,5,7-triazabicyclo[4.4.0]dec-5-ene (TBD) were performed in the absence of transition-metal complexes. The reaction of TBD with CO afforded TBD-CO adducts, which were converted to formylated TBD (TBD-CHO). TBD-CO adducts may include an interaction of CO with positively charged species based on NMR and IR analysis. In the presence of amines, CO was transferred from TBD-CO to amines, producing formylated amines with good yields. The reaction mechanism involving TBD-CO adducts is presented based on theoretical calculations. (Figure presented.).
Nanoporous TiO2 containing an ionic liquid bridge as an efficient and reusable catalyst for the synthesis of: N, N ′-diarylformamidines, benzoxazoles, benzothiazoles and benzimidazoles
Mazloumi,Shirini,Goli-Jolodar,Seddighi
, p. 5742 - 5752 (2018/04/23)
In this work, a green and efficient procedure is reported for the preparation of N,N'-diarylformamidines, benzoxazoles, benzothiazoles, and benzimidazoles using nanoporous TiO2 containing an ionic liquid bridge. This reagent is prepared via the modification of nanoporous TiO2 with bis-3-(trimethoxysilylpropyl)-ammonium hydrogen sulfate (TiO2-[bip]-NH2+ HSO4-). The procedure gave the products in excellent yields in very short reaction times under solvent-free conditions. The reusability of the catalyst is the other important feature of the reported method.
Compound with fluorescence resonance energy transfer performance and its application
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Paragraph 0053; 0054; 0055, (2018/03/28)
The invention relates to a compound with fluorescence resonance energy transfer performance and its application. The compound is prepared by trimethine cyanine dye and pentamethine cyanine dye througha proper connecting arm. The compound provided by the invention can be applied to detect active oxygen and active nitrogen, and is not influenced by probe concentration, background fluorescence, instrumental error and other factors; moreover, the compound has relatively high FRET efficiency.
