119492-43-2Relevant articles and documents
Mild and efficient copper-catalyzed N-arylation of alkylamines and N-H heterocycles using an oxime-phosphine oxide ligand
Xu, Lei,Zhu, Di,Wu, Fan,Wang, Rongliang,Wan, Boshun
, p. 6553 - 6560 (2005)
A mild and efficient copper-catalyzed system for N-arylation of alkylamines and N-H heterocycles with aryl iodides using a novel, readily prepared and highly stable oxime-functionalized phosphine oxide ligand was developed. The coupling reactions could even be performed in solvent-free conditions with moderate to good yields.
Improved catalytic performance of porous metal-organic frameworks for the ring opening of styrene oxide
Juli?o, Diana,Barbosa, André D.S.,Peixoto, Andreia F.,Freire, Cristina,De Castro, Baltazar,Balula, Salete S.,Cunha-Silva, Luís
, p. 4219 - 4226 (2017)
An emerging strategy to improve the performance of porous metal-organic framework (MOF) materials as heterogeneous catalysts is reported. The incorporation of the iron-substituted polyoxometalate (POM) TBA4[PW11Fe(H2O)Osu
Novel non-hydrolytic templated sol-gel synthesis of mesoporous aluminosilicates and their use as aminolysis catalysts
Skoda, David,Styskalik, Ales,Moravec, Zdenek,Bezdicka, Petr,Babiak, Michal,Klementova, Mariana,Barnes, Craig E.,Pinkas, Jiri
, p. 24273 - 24284 (2016)
A novel non-hydrolytic sol-gel (NHSG) synthesis of mesoporous aluminosilicate xerogels is presented. The polycondensation between silicon acetate, Si(OAc)4, and tris(dimethylamido)alane, Al(NMe2)3, leads to homogeneous alu
Robust and Environmentally Benign Solid Acid Intercalation Catalysts for the Aminolysis of Epoxides
Li, Tengfei,Jin, Lin,Zhang, Wei,Miras, Haralampos N.,Song, Yu-Fei
, p. 4699 - 4706 (2018)
The catalytic aminolysis of epoxides can lead to a large number of β-amino alcohols which are of particular interest in industrial applications. In this paper, we demonstrate for the first time the use of a polyoxometalate [CoW12O40]
Trimming nanostructured walls while fluorinating their surfaces: A route to making and widening pores of nanoporous materials and efficient catalysts
Duncan, Cole T.,Biradar, Ankush V.,Rangan, Sylvie,Mishler, Richard E.,Asefa, Tewodros
, p. 4950 - 4963 (2010)
We report on the synthesis and characterization of highly ordered mesoporous fluorosilicas (OMFs) and nanoporous and corrugated fluorosilica nanospheres which contain 2.4-7.0 wt % F, corresponding to a loading of 1.3-3.7 mmol/g. Synthesis of these materia
Mesoporous SnO2-SiO2 and Sn-silica-carbon nanocomposites by novel non-hydrolytic templated sol-gel synthesis
Skoda, David,Styskalik, Ales,Moravec, Zdenek,Bezdicka, Petr,Bursik, Jiri,Mutin, P. Hubert,Pinkas, Jiri
, p. 68739 - 68747 (2016)
A novel non-hydrolytic sol-gel (NHSG) synthesis of mesoporous tin silicate xerogels is presented. The polycondensation between silicon tetraacetate, Si(OAc)4, and tetrakis(diethylamido)tin, Sn(NEt2)4, resulting in acetamide elimination leads to tin silicate xerogels containing Si-O-Sn linkages. The addition of Pluronic P123 or F127 templates provides homogeneous stiff gels that are, after template removal by calcination at 500 °C in air, converted to stable mesoporous silica xerogels with large surface areas (476 m2 g-1) and dispersed SnO2 nanoparticles (6-7 nm). Heat treatment of the as-prepared tin silicate gels in an inert N2 atmosphere leads to reduction and transformation to Sn nanoparticles (70-150 nm) embedded in a silica-carbon matrix. The composition and morphology of the xerogels, volatile reaction byproducts, and thermal transformations were followed by elemental analyses, IR spectroscopy, thermal analysis TG-DSC, nitrogen adsorption measurements, solid-state NMR spectroscopy, DRUV-vis spectroscopy, electron microscopy, and HT powder XRD. The SnO2-SiO2 xerogels were tested as potential catalysts for aminolysis of styrene oxide with aniline and for the Meerwein-Ponndorf-Verley reduction of 4-tert-butylcyclohexanone. The resulting reaction systems displayed good activity and selectivity.
Post-synthesis of Zr-MOR as a robust solid acid catalyst for the ring-opening aminolysis of epoxides
Tang, Bo,Song, Wei-Chao,Li, Sheng-Yang,Yang, En-Cui,Zhao, Xiao-Jun
, p. 13503 - 13511 (2018)
Zirconosilicate with the MOR topology (Zr-MOR) was successfully prepared using a two-step post-synthesis strategy from pre-dealumination of a H-MOR zeolite and subsequent dry impregnation of Cp2ZrCl2. The incorporated Zr species main
Reaction Mechanism of CO2and Styrene Oxide Catalyzed by Ionic Liquids: A Combined DFT Calculation and Experimental Study
Chen, Jian,Ding, Tong,Gao, Guohua,Wang, Rong,Xia, Fei,Zha, Jinyin
, p. 7991 - 7998 (2020)
Bioactive compound 3-aryl-2-oxazolidinone could be synthesized by a green method mixing carbon dioxide, aniline, and ethylene oxide. Our group previously proposed a parallel mechanism for this conversion catalyzed by ionic liquids. Recently, a new study o
Mesoporous carbon as an efficient catalyst for alcoholysis and aminolysis of epoxides
Matos, Inês,Neves, Paulo Duarte,Castanheiro, José Eduardo,Perez-Mayoral, Elena,Martin-Aranda, Rosa,Duran-Valle, Carlos,Vital, Joaquim,Botelho Do Rego, Ana M.,Fonseca, Isabel M.
, p. 24 - 30 (2012)
The ring opening reaction of epoxides by alcohols and amines using mesoporous activated carbon as efficient and environmentally friendly heterogeneous catalyst is reported. Carbon xerogels were synthesized by polymerization of resorcinol and formaldehyde. The surface of the activated carbon was oxidized in liquid phase with HNO3 and then functionalized with H2SO4. Chemical and textural characterization by elemental analysis, pHPZC, TPD, BET and XPS indicates that oxidation in liquid phase is effective in the introduction of strong acid groups in the carbon surface. The functionalization with H2SO4 led to more acid functional groups, as expected. The activated carbons were tested in alcoholysis and aminolysis of epoxides, having been obtained excellent results of conversion and selectivity, both over 95%.
Lewis acids catalyzed ring-opening reactions of methylenecyclopropanes and epoxides in supercritical carbon dioxide or modified supercritical carbon dioxide with perfluorocarbon
Shi, Min,Chen, Yu
, p. 219 - 227 (2003)
The reactions of methylenecyclopropanes (MCPs) and epoxides with alcohols and aromatic amines can be carried out in supercritical carbon dioxide (scCO2) or modified scCO2 with perfluorocarbon which offer a way to synthesize various alcohols, amino-alcohols, homoallylic ethers, and amines under an environmentally benign condition.
