Relevant bibliographies by topics / Aluminium(I) Nucleophile

Academic literature on the topic 'Aluminium(I) Nucleophile'

Author: Grafiati
Published: 10 December 2022
Last updated: 29 January 2023

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Journal articles on the topic "Aluminium(I) Nucleophile"

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Hinz, Alexander, and Frank Breher. "An Anionic Aluminium Nucleophile." Angewandte Chemie International Edition 57, no. 29 (June 14, 2018): 8818–20. http://dx.doi.org/10.1002/anie.201804930.

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Nishi, Takafumi, Isao Mizota, and Makoto Shimizu. "Integrated reactions using addition to conjugated imines and iminium salts." Pure and Applied Chemistry 84, no. 12 (June 30, 2012): 2609–17. http://dx.doi.org/10.1351/pac-con-12-01-03.

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Recently, nucleophilic addition reactions to imino functions have been utilized in many crucial steps for the synthesis of bioactive and functional materials. This article summarizes the integrated “umpolung” reactions of α-imino esters and the use of iminium salts as reactive electrophiles. Regarding the umpolung reactions, the following five reactions are discussed: (1) N-alkylation/homocoupling; (2) tandem N-ethylation/C-allylation; (3) tandem N-ethylation/C-cyanation; (4) reduction of imines with tris(trimethylsilyl)aluminum; and (5) N-alkylation and Claisen rearrangement. Moreover, the generation and reactions of alkoxycarbonyl iminium species are also discussed. These are prepared easily from trisubstituted amino ketene silyl acetals by oxidation, and the subsequent nucleophilic addition of various nucleophiles readily affords the addition products.
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Zhang, Zhichao, Tianming Wang, Peng Xiang, Qinqin Du, and Shuang Han. "Syntheses, Characterization, and Application of Tridentate Phenoxyimino-Phenoxy Aluminum Complexes for the Coupling of Terminal Epoxide with CO2: From Binary System to Single Component Catalyst." Catalysts 11, no. 2 (January 20, 2021): 145. http://dx.doi.org/10.3390/catal11020145.

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A series of binuclear aluminum complexes 1–3 supported by tridentate phenoxyimino-phenoxy ligands was synthesized and used as catalysts for the coupling reaction of terminal epoxide with carbon dioxide. The aluminum complex 1, which is catalytically inactive toward the coupling of epoxide with CO2 by itself, shows moderate activity in the presence of excess nucleophiles or organic bases at high temperature. In sharp contrast to complex 1, bifunctional complexes 2 and 3, which incorporate tertiary amine groups as the built-in nucleophile, are able to efficiently transform terminal epoxide with CO2 to corresponding cyclic carbonates as a sole product by themselves at 100 °C. The number of amine groups on the ligand skeleton and the reaction temperature exert a great influence on the catalytic activity. The bifunctional complexes 2 and 3 are also active at low carbon dioxide pressure such as 2 atm or atmospheric CO2 pressure. Kinetic studies of the coupling reactions of chloropropylene oxide/CO2 and styrene oxide/CO2 using bifunctional catalysts under atmospheric pressure of CO2 demonstrate that the coupling reaction has a first-order dependence on the concentration of the epoxide.
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Cheng, Xu, Shuchen Pei, Chenchen Xue, Kaifei Cao, Li Hai, and Yong Wu. "Reactions of β-diketone compounds with nitriles catalyzed by Lewis acids: a simple approach to β-enaminone synthesis." RSC Adv. 4, no. 109 (2014): 63897–900. http://dx.doi.org/10.1039/c4ra10879e.

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Konshin, Valery V., Vitaly A. Shcherbinin, Ida A. Lupanova, and Dzhamilya N. Konshina. "Aluminum Triflate—Catalyzed Adamantylation of N-Nucleophiles." Proceedings 9, no. 1 (November 14, 2018): 21. http://dx.doi.org/10.3390/ecsoc-22-05661.

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An efficient method is proposed for N-adamantylation of primary carboxamides and sulfonamides, ethyl carbamate, and 4-nitroaniline using the stoichiometric amount of 1-adamantanol in the presence of 5 mol% aluminum triflate in nitromethane. Similarities and differences between adamantylation of some azoles catalyzed by aluminum triflate in nitromethane and the reaction catalyzed by Brønsted acids were revealed.
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Yamashita, Makoto. "Characteristic Reactions of Nucleophilic Aluminum Anion." Journal of Synthetic Organic Chemistry, Japan 79, no. 5 (May 1, 2021): 457–64. http://dx.doi.org/10.5059/yukigoseikyokaishi.79.457.

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Ranishenka, B. V., I. A. Chelnokova, and A. A. Poznyak. "Aluminium and mica azide surface functionalization." Proceedings of the National Academy of Sciences of Belarus, Chemical Series 58, no. 4 (November 29, 2022): 379–86. http://dx.doi.org/10.29235/1561-8331-2022-58-4-379-386.

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Aluminium and mica (muscovite) plates have been functionalized with azide groups by a protocol which includes (3-chloropropyl) trichlorosilane modification followed by chlorine atom nucleophilic substitution by azide. The azide groups have been transformed to dimethoxytrityl (DMT) ones by [3+2] azide-alkyne cycloaddition reaction. This made it possible to determine their number per surface unit photometrically, based on the absorption of the DMT cation. The functionalization method allowed to achieve high surface load of the materials by azide groups, which was 2.2 and 2.7 nm-2 for mica and aluminium, respectively. The mica plates have been additionally functionalized by 25 kDa branched polyethylenimine. The samples have shown a capability for adsorptive nanoand microobjects immobilization. The feature could be useful for atomic force microscopy, which have been demonstrated with erythrocytes and exosomes.
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8

Esrafili, Mehdi D. "A DFT study on electronic structure and local reactivity descriptors of pristine and carbon-substituted AlN nanotubes." Canadian Journal of Chemistry 91, no. 8 (August 2013): 711–17. http://dx.doi.org/10.1139/cjc-2013-0103.

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A density functional theory study was carried out to investigate the structural and electronic structure properties of pristine and carbon-substituted (6,0) aluminum nitride nanotubes (AlNNTs). We examine the usefulness of local reactivity descriptors to predict the reactivity of AlN atomic sites on the external surface of the tubes. The properties determined include the Fukui function f(k) and local softness s(k) on the surfaces of the investigated tubes. According to the values of f(k) and s(k) for the pristine AlNNT, the aluminum atoms are highly preferred sites for nucleophile addition. More especially, the aluminum atoms in middle portion show different reactivity pattern from those at the edge or cap regions of the nanotube. Our results indicate that the nitrogen atoms adjacent to the substituted carbon atoms are less reactive toward atomic hydrogen chemisorption than those in the pristine one. There is an acceptable correlation between chemisorption energies and reactivity indexes, indicating that f(k) and s(k) provide an effective means for rapidly and economically assessing the relative reactivities of finite-sized AlNNTs.
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Cullen, Adam, Alfred J. Muller, and D. Bradley G. Williams. "Protecting group-free use of alcohols as carbon electrophiles in atom efficient aluminium triflate-catalysed dehydrative nucleophilic displacement reactions." RSC Advances 7, no. 67 (2017): 42168–71. http://dx.doi.org/10.1039/c7ra08784e.

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Kasal, Alexander, and Jaroslav Zajíček. "Solvolysis of Westphalen-type compounds." Collection of Czechoslovak Chemical Communications 51, no. 7 (1986): 1462–75. http://dx.doi.org/10.1135/cccc19861462.

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Action of some nucleophilic reagents (CH3COOAg, CH3COOK, LiAlH4) on 6β-chloro- and 6β-methanesulfonyloxy-5-methyl-19-nor-5β-cholest-9-enes VIII - XII affords predominantly A-homo-B,19-dinor-5β-cholest-9-ene derivatives, arising by rearrangement and substitution (XIII, XXIV) or rearrangement and elimination (e.g. XX). Hydrogenolysis of compounds of the type VIII with lithium aluminium hydride gives, in addition, a product of rearrangement, fragmentation and further reduction (XXVI), and 5-methyl-6α,10-cyclo-19-nor-5β,9β,10α-cholestan-3β-ol (XXX).
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Dissertations / Theses on the topic "Aluminium(I) Nucleophile"

1

Jachiet, Denis. "Reactivite des organocuprates et des organoaluminates associes a bf::(3) dans l'ouverture nucleophile des oxirannes : application a la synthese de pheromones." Paris 6, 1987. http://www.theses.fr/1987PA066438.

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Book chapters on the topic "Aluminium(I) Nucleophile"

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Olah, George A., Imre Bucsi, Christian Lambert, Robert Aniszfeld, Nirupam J. Trivedi, Dilip K. Sensharma, and G. K. Surya Prakash. "Chlorination and Bromination of Fullerenes: Nucleophilic Methoxylation of Polychlorofullerenes and Their Aluminum Trichloride Catalyzed Friedel–Crafts Reaction with Aromatics to Polyarylfullerenes." In World Scientific Series in 20th Century Chemistry, 1293–95. World Scientific Publishing Company, 2003. http://dx.doi.org/10.1142/9789812791405_0249.

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Conference papers on the topic "Aluminium(I) Nucleophile"

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Xinglei, Hu. "Experiment and Mechanism Study on the Effect of Coal Ash on the Capture of Alkali Metals in Zhundong Coal." In ASME 2017 Power Conference Joint With ICOPE-17 collocated with the ASME 2017 11th International Conference on Energy Sustainability, the ASME 2017 15th International Conference on Fuel Cell Science, Engineering and Technology, and the ASME 2017 Nuclear Forum. American Society of Mechanical Engineers, 2017. http://dx.doi.org/10.1115/power-icope2017-3570.

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A large number of Xinjiang Zhundong coal was found in China. Its high content of alkali metals can cause serious fouling/slagging problems which may lead to economic losses. It is significant to control the release of alkali metals from Zhundong coal during the combustion. Si-Al additives are used to capture Na released from the Zhundong coal. In this work, a combination of experimental research and quantum chemical calculation was used to study the effect of coal ash on the capture of alkali metal in Zhundong high alkali Coal and the related mineral evolution mechanism during melting processes. The experiments were done with Zhundong coal/coal ash mixtures at 900–1200°C. The behavior mechanism of coal ash capturing alkali metals was analyzed from the perspective of mineral microstructure features by using XRD, ICP and quantum chemical calculation methods. The results show that during the process of combustions, complex chemical reactions occur among minerals after sodium is released from the coal and captured by the coal ash. The coal ash’s ability to capture sodium in Zhundong high alkali coal rises firstly, and then gradually decreases with the rise of temperature. It shows the best capture performance for sodium at 1000∼1100°C. The maximum efficiency of sodium absorption can reach to 50.6%. The coal ash shows a rather high efficiency compared with other additives. Furthermore, metals in Zhundong coal have opposite directions of migration. The Na, K, Al, Ca, and Mg migrated to the coal ash far away from the reaction interface, and the Fe and Mn were moved to the coal from the reaction interface. The original minerals of Zhundong coal mainly include calcium sulfate hydrate, quartz and kaolinite. Investigating the capture mechanism, it indicates that O (26) and O (22) in kaolinite have electrophilic reaction with Na+ and K+ easily, which would promote the rupture of aluminum-oxygen bonds. The O2- of alkali metal or alkaline earth metal oxide would easily have nucleophilic reaction with Si (6) and Si (8) and prompt the rupture of bridging oxygen bonds (Si-O-Si). Kaolinite would be transformed into some other minerals that contains Na+ or K+ which have trend to form eutectics or evaporate into the flue gas easily, the degree of fouling and slagging on heating surface can be reduced based on these two most easily reaction paths.
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