- Copper(II) complexes with carboxylic- or sulfonic-functionalized arylhydrazones of acetoacetanilide and their application in cyanosilylation of aldehydes
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The new copper(II) complexes [Cu(HL1)(H2O)(CH3OH)] (1, H3L1?= (Z)-2-(2-(1,3-dioxo-1-(phenylamino)butan-2-ylidene)hydrazinyl)benzoic acid) and [Cu(HL2)(H2O)(CH3OH)] (2,
- Gurbanov, Atash V.,Mahmudov, Kamran T.,Sutradhar, Manas,Guedes da Silva, Fátima C.,Mahmudov, Talib A.,Guseinov, Firudin I.,Zubkov, Fedor I.,Maharramov, Abel M.,Pombeiro, Armando J.L.
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Read Online
- Cyanosilylation of aldehydes catalyzed by mixed ligand copper(II) complexes
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The new mixed ligand copper(II) complexes [Cu(HL)(H2O)(A)]·2H2O (1, NaH2L = sodium (Z)-2-(2-(1,3-dioxo-1-(phenylamino)butan-2-ylidene)hydrazinyl)benzenesulfonate, A = dimethylsulfoxide, [Cu(HL)(H2O)(B)] (2, B =
- Gurbanov, Atash V.,Mahmoudi, Ghodrat,Guedes da Silva, M. Fátima C.,Zubkov, Fedor I.,Mahmudov, Kamran T.,Pombeiro, Armando J.L.
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- Trinuclear and polymeric cobalt(II or II/III) complexes with an arylhydrazone of acetoacetanilide and their application in cyanosilylation of aldehydes
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The new trinuclear [CoII(H2O)2(Me2NCHO)2{CoIII(1κNOO′:2κO″-μ-HL)}2(1κNOO′)]·2H2O (1) and polymeric [CoII(1κNOO′:2κO″-μ-HL)(MeOH)2]n (2
- Gurbanov, Atash V.,Maharramov, Abel M.,Guedes da Silva, M. Fátima C.,Pombeiro, Armando J.L.
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Read Online
- Reaction of sodium 2-(2-(2,4-dioxopentan-3-ylidene)hydrazinyl) benzenesulfonate with ethylenediamine on Cu(ii) and Ni(ii) centres: Efficient Cu(ii) homogeneous catalysts for cyanosilylation of aldehydes
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By reacting copper(ii) or nickel(ii) salts with sodium 2-(2-(2,4-dioxopentan-3-ylidene)hydrazinyl) benzenesulfonate (NaHL) in an EtOH/H2O solvent mixture and in the presence of ethylenediamine (en), [Cu(HL)2(en)2] (1) or {
- Mahmoud, Abdallah G.,Mahmudov, Kamran T.,Guedes Da Silva, M. Fátima C.,Pombeiro, Armando J. L.
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Read Online
- Packing polymorphism in 3-amino-2-pyrazinecarboxylate based tin(ii) complexes and their catalytic activity towards cyanosilylation of aldehydes
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Reactions of 3-amino-2-pyrazinecarboxylic acid (HL) with SnCl2 under different hydrothermal conditions and crystallization processes produced two new mononuclear Sn(ii) compounds (1 and 2) of general formula [Sn(κN,O-L)2] (L = 3-amin
- Karmakar, Anirban,Hazra, Susanta,Rúbio, Guilherme M. D. M.,Guedes Da Silva, M. Fátima C.,Pombeiro, Armando J. L.
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- Solvent-Induced Facile Synthesis of Cubic-, Spherical-, and Honeycomb-Shape Palladium N-Heterocyclic Carbene Particles and Catalytic Applications in Cyanosilylation
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The facile synthesis of palladium N-heterocyclic carbene (NHC) particles with spherical, cubic, and honeycomb morphologies is accomplished. The structures of cubic and honeycomb particles are defined as an unprecedented trinuclear palladium-NHC complex. A
- Zhao, Huaixia,Li, Xinxiong,Li, Liuyi,Wang, Ruihu
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- Synthesis, crystal structure and catalytic property of a cadmium(II) coordination polymer derived from a zwitterionic carboxylate ligand
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A new Cadmium(II) zwitterionic coordination polymer, {[Cd(cbdcp)(H2O)4]·H2O}n, (1) was synthesized based on the 1-(3,5-dicarboxybenzyl)-4,4′-bipyridinium bromide (H3cbdcpBr) organic linker. In 1, Cd(I
- Zhang, Jian-Wei,Cheng, Yan,Liu, Shu-Hua
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Read Online
- Photoluminescence, Unconventional-Range Temperature Sensing, and Efficient Catalytic Activities of Lanthanide Metal-Organic Frameworks
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A luminescent lanthanide metal-organic framework (MOF) based on Eu3+ and Tb3+ ions with 2-phenylsuccinate (EuTb-psa) was obtained solvothermally to explore its behavior as a temperature sensor in an unconventional temperature range t
- Gomez, Germán E.,Kaczmarek, Anna M.,Van Deun, Rik,Brusau, Elena V.,Narda, Griselda E.,Vega, Daniel,Iglesias, Marta,Gutierrez-Puebla, Enrique,Monge, M. ángeles
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- Two Gd(III) coordination polymers based on a flexible tricarboxylate: Syntheses, structures, luminescence and catalytic properties
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Two Gadolinium coordination polymers {[Gd·(TTTA)·(H2O)2]·2H2O}n (1) and [Gd·(TTTA)·DMF]n (2) have been synthesized based on Gd(NO3)3·6H2O and the flexible tripodal lig
- Zhu, Yu,Zhu, Min,Liu, Pan,Xia, Li,Wu, Yunlong,Xie, Jimin
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- Zirconium-based MOF catalyst with double active sites and preparation method and application thereof
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The invention discloses a zirconium-based MOF catalyst loaded with double active sites as well as a preparation method and an application of the zirconium-based MOF catalyst. The method comprises thefollowing steps: adding zirconium salt and an organic ligand into an organic solvent, taking organic acid as a regulator, and carrying out self-assembly reaction to obtain a metal organic framework; adding salicylaldehyde for aldehyde amine condensation to obtain chelating coordination sites, adding palladium salt, and performing coordination through an impregnation method; reducing the obtained MOF in hydrogen to obtain an MOF loaded with Pd nanoparticles; reacting MOF and zinc salt in an organic solvent, and obtaining the catalyst. The Pd-Zn-coated UiO-68-NH2-CH3 catalyst synthesized by thepreparation method disclosed by the invention has efficient catalytic activity in a tandem alcohol oxidation/aldehyde cyanosilylation reaction. According to the catalyst, a metal organic framework UiO-68-NH2-CH3 is constructed, Pd nanoparticles and Zn are loaded by taking the metal organic framework UiO-68-NH2-CH3 as a carrier, the loading capacity of the Pd nanoparticles is 4-8wt%, and the loading capacity of the Zn is 3-5wt%.
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Paragraph 0071; 0073; 0075-0079
(2021/06/09)
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- Multinuclear transition metal-containing polyoxometalates constructed from Nb/W mixed-addendum precursors: synthesis, structures and catalytic performance
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Four new transition metal-containing Nb/W mixed-addendum POM trimers with the formula H19[M4(H2O)x(P2W15Nb3O62)3]·m(HCOOH)·nH2O (M = Cu,x= 15,m=
- Chen, Xuenian,Li, Na,Li, Shujun,Ma, Yubin,Xiao, Wanru,Zhang, Jie,Zhao, Yue
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supporting information
p. 8690 - 8695
(2021/07/02)
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- Role of metal center and coordination environment in M-(Z)-N-((E)-pyridin-2-ylmethylene)isonicotinohydrazonate (M = LaIII, ZnII, CdII or HgII) catalyzed cyanosilylation of aldehydes
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A series of known metal complexes, [LaL2(NO3)(H2O)2]·5H2O (1), [Zn(μ-L)(NO3)(H2O)]n (2), {[Cd2(μ-HL)(μ-L)(NO3)3(H2O)]·Hsub
- Hajiyeva, Sevinc R.,Huseynov, Fatali E.,Kopylovich, Maximilian N.,Mahmoudi, Ghodrat,Nikitina, Eugeniya V.,Prisyazhnyuk, Ekaterina D.,Shamilov, Nazim T.,Zubkov, Fedor I.
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- Cyanosilylation of carbonyl compounds catalyzed by half-sandwich (η6-p-cymene) Ruthenium(II) complexes bearing heterocyclic hydrazone derivatives
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A new class of half-sandwich (?6-p-cymene) ruthenium(II) complexes supported by heterocyclic hydrazone derivatives of general formula [Ru(?6-p-cymene)(Cl)(L)] where L represents N’-((1H-pyrrol-2-yl)methylene)furan-2-carbohydrazide (L
- Alves, Luis G.,Bharathi, Madheswaran,Indira, Sekar,Martins, Ana M.,Shanmuga Bharathi, Kuppannan,Vinoth, Govindasamy
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- Application of an Electrochemical Microflow Reactor for Cyanosilylation: Machine Learning-Assisted Exploration of Suitable Reaction Conditions for Semi-Large-Scale Synthesis
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Cyanosilylation of carbonyl compounds provides protected cyanohydrins, which can be converted into many kinds of compounds such as amino alcohols, amides, esters, and carboxylic acids. In particular, the use of trimethylsilyl cyanide as the sole carbon source can avoid the need for more toxic inorganic cyanides. In this paper, we describe an electrochemically initiated cyanosilylation of carbonyl compounds and its application to a microflow reactor. Furthermore, to identify suitable reaction conditions, which reflect considerations beyond simply a high yield, we demonstrate machine learning-assisted optimization. Machine learning can be used to adjust the current and flow rate at the same time and identify the conditions needed to achieve the best productivity.
- Sato, Eisuke,Fujii, Mayu,Tanaka, Hiroki,Mitsudo, Koichi,Kondo, Masaru,Takizawa, Shinobu,Sasai, Hiroaki,Washio, Takeshi,Ishikawa, Kazunori,Suga, Seiji
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supporting information
p. 16035 - 16044
(2021/09/02)
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- H-Bonded and metal(ii)-organic architectures assembled from an unexplored aromatic tricarboxylic acid: structural variety and functional properties
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This study reports the application of an aromatic tricarboxylic acid, 2,5-di(4-carboxylphenyl)nicotinic acid (H3dcna) as a versatile and unexplored organic building block for assembling a new series of metal(ii) (M = Co, Ni, Zn, Fe, and Mn) complexes and coordination polymers, namely [M(Hdcna)(phen)2(H2O)]·H2O (M = Co (1), Ni (2)), [Zn(μ-Hdcna)(phen)]n(3), [Co(μ-Hdcna)(bipy)(H2O)2]n·nH2O (4), [Zn2(μ-Hdcna)2(bipy)2(H2O)4]·6H2O (5), [Zn(μ3-Hdcna)(H2biim)]n(6), [Ni2(Hdcna)2(μ-bpb)(bpb)2(H2O)4] (7), [Fe(μ4-Hdcna)(μ-H2O)]n·nH2O (8), and [Mn3(μ5-dcna)2(bipy)2(H2O)2]n·2nH2O (9). Such a diversity of products was hydrothermally prepared from the corresponding metal(ii) salts, H3dcna as a principal multifunctional ligand, and N-donor mediators of crystallization (1,10-phenanthroline, phen; 2,2'-bipyridine, bipy; 2,2'-biimidazole, H2biim; or 1,4-bis(pyrid-4-yl)benzene, bpb). The obtained products1-9were fully characterized by standard methods (elemental analysis, FTIR, TGA, PXRD) and the structures were established by single-crystal X-ray diffraction. These vary from the discrete monomers (1,2) and dimers (5,7) to the 1D (3,4,6) and 2D (8,9) coordination polymers (CPs). Structural and topological characteristics of hydrogen-bonded or metal-organic architectures in1-9were highlighted, revealing that their structural multiplicity depends on the type of metal(ii) source and crystallization mediator. Thermal stability as well as luminescent, magnetic, or catalytic properties were explored for selected compounds. In particular, the zinc(ii) derivatives3,5, and6were applied as efficient heterogeneous catalysts for the cyanosilylation of aldehydes with trimethylsilyl cyanide at room temperature. The catalytic reactions were optimized by tuning the different reaction parameters (solvent composition, time, catalyst loading) and the substrate scope was also explored. Compound5revealed superior catalytic activity leading to up to 75% product yields, while maintaining its original performance upon recycling for at least four reaction cycles. Finally, the obtained herein products represent the unique examples of coordination compounds derived from H3dcna, thus opening up the use of this multifunctional tricarboxylic acid for generating complexes and coordination polymers with interesting structures and functional properties.
- Gu, Jin-Zhong,Kirillov, Alexander M.,Kirillova, Marina V.,Wan, Shi-Mao
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p. 7197 - 7209
(2020/06/04)
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- Three Coordinated Organoaluminum Cation for Rapid and Selective Cyanosilylation of Carbonyls under Solvent-Free Conditions
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The well-defined three coordinated electronically unsaturated cationic organoaluminum complex [({(2,6-iPr2C6H3N)P(Ph2)}2N)AlMe]+[MeB(C6F5)3]? (1), has been utilized to catalyze the cyanosilylation of aldehydes and ketones under mild and solvent-free conditions. Moreover, catalyst 1 showed high chemoselective cyanosilylation of aldehydes over ketones, nitriles and olefins. The multinuclear NMR investigations revealed that cyanosilylation proceeds via Lewis adduct formation between 1 and TMSCN thereby activating TMSCN (Si-CN bond) followed by nucleophilic attack of the carbonyl oxygen at the Si center of the activated silane and formation of the product.
- Bhandari, Mamta,Prashanth, Billa,Rawat, Sandeep,Singh, Sanjay
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- Role of aromatic: Vs. aliphatic amine for the variation of structural, electrical and catalytic behaviors in a series of silver phosphonate extended hybrid solids
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Four inorganic-organic hybrid silver phosphonate compounds, [Ag(C10H8N2)(H4hedp)] (1), [Ag2(C10H8N2)(H3hedp)]·2H2O (2), [C4H12N2][Ag4(H2hedp)2] (3) and [C4H12N2][Ag10(H2hedp)4(H2O)2]·2H2O (4) (H5hedp = 1-hydroxyethane-1,1-diphosphonic acid), have been pre
- Rom, Tanmay,Paul, Avijit Kumar
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p. 13618 - 13634
(2020/10/26)
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- A urea-containing metal-organic framework as a multifunctional heterogeneous hydrogen bond-donating catalyst
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A urea-containing metal-organic framework (MOF) was synthesized from a V-shaped dicarboxylate ligand and Cu(II) ions. As the undesirable self-aggregation of the urea moiety has been prohibited in the framework, this MOF can act as a heterogeneous hydrogen
- Zhu, Chengfeng,Tang, Haitong,Yang, Keke,Wu, Xiang,Luo, Yunfei,Wang, Jin,Li, Yougui
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- Layered double hydroxides (LDHs): As efficient heterogeneous catalyst for the cyanosilylation of aromatic aldehydes
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We report the first application of Layered Double Hydroxides (LDHs) as efficient and novel heterogeneous catalyst for the cyanosilylation of aldehydes with excellent yields and simple work up. The reaction between different aldehydes with electron-withdra
- Afi, Fahimeh,Mokhtari, Javad,Tahoori, Fatemeh
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- Supported Ionic Liquid-Like Phases (SILLPs) as Immobilised Catalysts for the Multistep and Multicatalytic Continuous Flow Synthesis of Chiral Cyanohydrins
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Supported Ionic Liquid-Like Phases have been found to be efficient organocatalysts for the synthesis of cyanohydrin esters under solvent-free conditions by an “electrophile-nucleophile dual activation” based on hydrogen bond formation. The combination of
- Peris, Edgar,Porcar, Raúl,Burguete, María Isabel,García-Verdugo, Eduardo,Luis, Santiago V.
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p. 1955 - 1962
(2019/03/13)
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- Discovery of the First in Vivo Active Inhibitors of the Soluble Epoxide Hydrolase Phosphatase Domain
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The emerging pharmacological target soluble epoxide hydrolase (sEH) is a bifunctional enzyme exhibiting two different catalytic activities that are located in two distinct domains. Although the physiological role of the C-terminal hydrolase domain is well-investigated, little is known about its phosphatase activity, located in the N-terminal phosphatase domain of sEH (sEH-P). Herein we report the discovery and optimization of the first inhibitor of human and rat sEH-P that is applicable in vivo. X-ray structure analysis of the sEH phosphatase domain complexed with an inhibitor provides insights in the molecular basis of small-molecule sEH-P inhibition and helps to rationalize the structure-activity relationships. 4-(4-(3,4-Dichlorophenyl)-5-phenyloxazol-2-yl)butanoic acid (22b, SWE101) has an excellent pharmacokinetic and pharmacodynamic profile in rats and enables the investigation of the physiological and pathophysiological role of sEH-P in vivo.
- Kramer, Jan S.,Woltersdorf, Stefano,Duflot, Thomas,Hiesinger, Kerstin,Lillich, Felix F.,Kn?ll, Felix,Wittmann, Sandra K.,Klingler, Franca-M.,Brunst, Steffen,Chaikuad, Apirat,Morisseau, Christophe,Hammock, Bruce D.,Buccellati, Carola,Sala, Angelo,Rovati, G. Enrico,Leuillier, Matthieu,Fraineau, Sylvain,Rondeaux, Julie,Hernandez-Olmos, Victor,Heering, Jan,Merk, Daniel,Pogoryelov, Denys,Steinhilber, Dieter,Knapp, Stefan,Bellien, Jeremy,Proschak, Ewgenij
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p. 8443 - 8460
(2019/10/16)
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- Novel primary amide-based cationic metal complexes: Green synthesis, crystal structures, Hirshfeld surface analysis and solvent-free cyanosilylation reaction
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A new symmetrical and flexible primary amide functionalized ligand, 2,2′-(ethane-1,2-diylbis((pyridin-2-ylmethyl)azanediyl))diacetamide (2-BPEG), has been synthesized and structurally characterized. Using this multidentate ligand, four novel metal complex
- Markad, Datta,Mandal, Sanjay K.,Khullar, Sadhika
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p. 3743 - 3757
(2019/04/25)
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- Three-Dimensional Co(II)-Metal-Organic Frameworks with Varying Porosities and Open Metal Sites toward Multipurpose Heterogeneous Catalysis under Mild Conditions
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In recent years, heterogeneous catalysis has become one of the most active domains in the research of metal-organic frameworks (MOFs). Here, two three-dimensional (3D) Co(II)-MOFs with open metal sites and exposed azo functionality on the MOF backbone hav
- Chand, Santanu,Pal, Shyam Chand,Mondal, Manas,Hota, Subrata,Pal, Arun,Sahoo, Rupam,Das, Madhab C.
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p. 5343 - 5353
(2019/09/30)
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- Two scandium coordination polymers: Rapid synthesis and catalytic properties
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Two scandium coordination polymers (Sc-CPs), [Sc(L1)2(DMF)] (DMF = N,N′-dimethyl formamide, H2L1 = pyrazine-2,3-dicarboxylic acid) (1) and [Sc(L2)(C2O4)0.5(H2/su
- Zhu, Ziqian,Tao, Yufang,Jiang, Yansong,Zhang, Liying,Xu, Jianing,Wang, Li,Fan, Yong
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p. 5261 - 5268
(2019/09/16)
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- Low-valent magnesium(i)-catalyzed cyanosilylation of ketones
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The magnesium(i) complex [(XylNacnac)Mg]2 was employed as a highly efficient catalyst for the cyanosilylation of a variety of ketones with trimethylsilyl cyanide under mild conditions. In contrast to the traditional stoichiometric us
- Wang, Weifan,Luo, Man,Li, Jia,Pullarkat, Sumod A.,Ma, Mengtao
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supporting information
p. 3042 - 3044
(2018/03/28)
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- Preparation method of cyanalcohol silyl ether compound
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The invention discloses a preparation method of a cyanalcohol silyl ether compound. The preparation method comprises usage of a catalyst, the catalyst is a tridentate forceps-shaped ligand-stabilizedmagnesium lithium bimetallic compound. According to the
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Paragraph 0062; 0063; 0064
(2019/01/06)
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- Method for aldehyde cyanosilylation reaction under conditions of no catalyst or solvent
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The invention discloses a method for an aldehyde cyanosilylation reaction under conditions of no catalyst or solvent. In a glove box, aldehyde and trimethylsilyl cyanide are sequentially added to a nuclear magnetic resonance tube, then, the glove box is m
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Paragraph 0093; 0094; 0095; 0099
(2018/11/22)
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- Cyanosilylation of Aldehydes Catalyzed by Iron(III) Arylhydrazone-β-Diketone Complexes
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Two known iron(iii) complexes, [Fe(H2O)3(L1)]·xH2O (x≤4 (1), 5 (2)) and [Fe(H2O)3(L2)]·3H2O (3), bearing the basic forms of 5-chloro-3-(2-(4,4-dimethyl-2,6-dioxocyclohexylidene)hydrazinyl)-2-hydroxybenzenesulfonic acid (H3L1) and 3-(2-(2,4-dioxopentan-3-y
- Gurbanov, Atash V.,Maharramov, Abel M.,Zubkov, Fedor I.,Saifutdinov, Alexander M.,Guseinov, Firudin I.
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p. 190 - 194
(2018/03/09)
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- Beyond Hydrofunctionalisation: A Well-Defined Calcium Compound Catalysed Mild and Efficient Carbonyl Cyanosilylation
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Organocalcium compounds have been reported as efficient catalysts for various transformations, for cases in which one of the substrates contained an E?H (E=B, N, Si, P) bond. Here, we look at the possibility of employing an organocalcium compound for a tr
- Yadav, Sandeep,Dixit, Ruchi,Vanka, Kumar,Sen, Sakya S.
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supporting information
p. 1269 - 1273
(2018/02/06)
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- Cyanosilylation of aldehydes catalyzed by lanthanide derivatives comprising arylhydrazones of β-diketones
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Two known lanthanide complexes, [KLa(HL1)2{(CH3)2NCHO}2(H2O)3] (1) and [Sm(H2O)9](E-H2L2)3·2H2O (2) were prepare
- Huseynov, Fatali E.,Shamilov, Nazim T.,Mahmudov, Kamran T.,Maharramov, Abel M.,Guedes da Silva, M.Fátima C.,Pombeiro, Armando J.L.
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p. 102 - 105
(2017/09/06)
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- Catalytic cyanosilylation using germylene stabilized platinum(ii) dicyanide
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The ability of a platinum compound to act as a catalyst for the cyanosilylation of carbonyl compounds is demonstrated through a well-defined germylene stabilized Pt(ii) dicyanide, trans-{(iBu)2ATIGe(iPr)}2Pt(CN)
- Sharma, Mahendra Kumar,Singh, Dharmendra,Mahawar, Pritam,Yadav, Ravi,Nagendran, Selvarajan
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supporting information
p. 5943 - 5947
(2018/05/14)
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- Preparation of chitosan-supported urea materials and their application in some organocatalytic procedures
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An efficient and mild procedure was developed for the preparation of three chitosan-supported ureas containing electron-withdrawing groups. These catalysts were characterized and employed as organocatalysts in different transformations, including the enan
- de Gonzalo, Gonzalo,Franconetti, Antonio,Fernández, Rosario,Lassaletta, José M.,Cabrera-Escribano, Francisca
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p. 365 - 374
(2018/07/25)
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- Efficient and selective aldehyde cyanosilylation catalyzed by Mg-Li bimetallic complex
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A NCN-pincer ligand-based Mg-Li bimetallic complex [NCN-MgBr2][Li(THF)4] 1 has been employed as an efficient catalyst for cyanosilylation of a wide range of aldehydes with trimethylsilyl cyanide (TMSCN) at room temperature in CDClsu
- Li, Jia,Yu, Ting,Luo, Man,Xiao, Qian,Yao, Weiwei,Xu, Li,Ma, Mengtao
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- α-Hydroxy-Tetrazoles as Latent Ethynyl Moieties: A Mechanistic Investigation
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This article focuses on the dehydration of α-hydroxy-tetrazoles, leading to tetraazafulvenes and then to vinylic carbenes that rearrange into ethynyl moieties through the Fritsch-Buttenberg-Wiechell rearrangement. Each step of this sequence was scrutinized, either by examination of the substrate and/or dehydrating agent scope, or through AM1 calculations, in order to understand the limiting step of this process. This underrated transformation appears to be a viable alternative to existing methods used for transforming aldehydes into alkynes.
- Quinodoz, Pierre,Wright, Karen,Drouillat, Bruno,Kletskii, Mikhail E.,Burov, Oleg N.,Lisovin, Anton. V.,Couty, Fran?ois
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- Metal free mild and selective aldehyde cyanosilylation by a neutral penta-coordinate silicon compound
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This study demonstrates the preparation and structural characterization of a Si(iv) hydride (PhC(NtBu)2SiH(CH3)Cl) (1) and its use as a catalyst for the cyanosilylation of a variety of aldehydes. Compound 1 represents the first neutr
- Swamy,Bisai, Milan Kumar,Das, Tamal,Sen, Sakya S.
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supporting information
p. 6910 - 6913
(2017/07/10)
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- A cationic aluminium complex: An efficient mononuclear main-group catalyst for the cyanosilylation of carbonyl compounds
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A structurally characterized cationic aluminium complex [(AT)Al(DMAP)]+[OTf]- (3) stabilized through a relatively nonbulky aminotroponate (AT) ligand is reported (DMAP = 4-(dimethylamino)pyridine). This compound was found to work as
- Sharma, Mahendra Kumar,Sinhababu, Soumen,Mukherjee, Goutam,Rajaraman, Gopalan,Nagendran, Selvarajan
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supporting information
p. 7672 - 7676
(2017/07/11)
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- Dimeric alumatranes as catalysts for trimethylsilylcyanation reaction
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The solid-state structures of dimeric alumatranes with three five-membered rings chelated by [(OCMe2CH2)nN(CH2CH2O)3-n]3- (n = 1, L1; n = 2, L2; n = 3, L3), which vary by the num
- Kim, Yoseph,Lee, Kang Mun,Kim, So Han,Moon, Jung Hee,Kim, Youngjo
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p. 48151 - 48160
(2017/11/03)
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- Synthesis of magnetically recoverable imidazolium hydrogen carbonate and its application as an N-heterocyclic carbene catalyst to cyanosilylation of aldehydes and ketones
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We prepared a magnetically recoverable imidazolium hydrogen carbonate by immobilizing an imidazolium hydrogen carbonate on magnetite and applied it as an N-heterocyclic carbene catalyst to the cyanosilylation of aldehydes and ketones. By employing the magnetite-supported imidazolium hydrogen carbonate as a catalyst, the cyanosilylation proceeded at 60?°C to provide the corresponding trimethylsilylated cyanohydrin in a fair chemical yield. Moreover, after the reaction, the magnetic catalyst was readily recovered by use of an external magnet and could be reused up to five times.
- Fujii, Akira,Choi, Jun-Chul,Fujita, Ken-ichi
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supporting information
p. 1515 - 1518
(2017/03/24)
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- Fully meta-Substituted 4,4′-Biphenyldicarboxylate-Based Metal–Organic Frameworks: Synthesis, Structures, and Catalytic Activities
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Fully meta-substituted 2,2′,6,6′-tetramethoxy-4,4′-biphenyldicarboxylic acid (H2L) was synthesized and applied in the construction of three metal–organic frameworks (MOFs), {[Cu3L3(H2O)2(DMF)]n (1), [Zn4OL3]n (2), and [Zn4OL3(H2O)(DEF)]n (3)}. For 1, the approximately vertical twist of two benzene rings in L leads to the formation of a twofold-interpenetrated 3D structure with 1D open channels (11 × 15 ?). MOFs 2 and 3 have classical twofold-interpenetrated isoreticular MOF structures, and reversible transformation of the oxozinc carboxylate clusters of 2 and 3 could be realized via a solvent-exchange-induced single-crystal-to-single-crystal pathway, which provides direct structural evidence for a Zn4O core as Lewis acidic site in MOFs. Desolvated framework 1′ exhibits high permanent porosity (Langmuir surface area = 555 m2/g), high thermal stability (up to 300 °C), and highly active catalytic properties for cyanosilylation and olefin epoxidation. MOF 2 exhibits moderate carbon dioxide uptake ability and can efficiently catalyze the cycloaddition of CO2 with epoxides under mild conditions.
- Li, Jiawei,Ren, Yanwei,Qi, Chaorong,Jiang, Huanfeng
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p. 1478 - 1487
(2017/03/31)
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- Lanthanide metal organic frameworks based on dicarboxyl-functionalized arylhydrazone of barbituric acid: Syntheses, structures, luminescence and catalytic cyanosilylation of aldehydes
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Five isostructural lanthanide MOFs, [Ln(1κOO′,2κO′′,3κO′′′,4κO′′′′-μ4-L)(NO3)(DMF)2]n·n(DMF) {Ln = La3+ (1), Ce3+ (2), Nd3+ (3), Sm3+ (4) and Dy3+ (5); L =
- Karmakar, Anirban,Rúbio, Guilherme M. D. M.,Paul, Anup,Guedes da Silva, M. Fátima C.,Mahmudov, Kamran T.,Guseinov, Firudin I.,Carabineiro, Sónia A. C.,Pombeiro, Armando J. L.
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p. 8649 - 8657
(2017/07/12)
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- Cyanosilylation of aldehydes catalyzed by arylhydrazone di- and triorganotin(IV) complexes
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Two known organotin(IV) complexes, [Sn(C6H5)3HL1] (1) and [Sn(C2H5)2(1κO,2κO-H3L2) (1κO2-H3L2) (μ3-O)]2/su
- Gurbanov, Atash V.,Huseynov, Fatali E.,Maharramov, Abel M.,Guedes da Silva, M. Fátima C.,Pombeiro, Armando J.L.
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p. 118 - 121
(2017/08/04)
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- Metal-organic framework material based on MnII, and preparation method and application thereof
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The invention relates to a metal-organic framework material based on MnII, and a preparation method and application thereof. The preparation method comprises the steps of adding Mn(OAc)2, benzotriazole-5-carboxylic acid, N,N'-dimethylformamide, ethyl alco
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Paragraph 0032-0036
(2017/08/30)
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- TBD-catalyzed cyanosilylation of aldehydes and ketones
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This study examines the catalytic efficacy of 1,5,7-triazabicyclo[4,4,0]dec-5-ene (TBD) in the cyanosilylation of aldehydes and ketones. In an aldehyde reaction, the corresponding products were obtained at high yield using minimal TBD (0.01 mol%). TBD was
- Matsukawa,Kimura
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p. 1947 - 1952
(2016/11/25)
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- Zinc(II) and Copper(II) Metal–Organic Frameworks Constructed from a Terphenyl-4,4′′-dicarboxylic Acid Derivative: Synthesis, Structure, and Catalytic Application in the Cyanosilylation of Aldehydes
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Solvothermal reaction of zinc(II) and copper(II) salts with 3,3′′-dipropoxy-[1,1′:4′,1′′-terphenyl]-4,4′′-dicarboxylic acid (H2L) gave rise to the 1D and 2D metal–organic frameworks (MOFs) [Zn(L)(dmf)2]n(1), [Zn2/sub
- Karmakar, Anirban,Paul, Anup,Rúbio, Guilherme M. D. M.,Guedes da Silva, M. Fátima C.,Pombeiro, Armando J. L.
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p. 5557 - 5567
(2016/12/26)
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- Mixed Metal-Organic Framework as a Heterogeneous Catalyst
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The synthesis of a new mixed metal-organic framework (M′MOF) has been accomplished by the metalloligand approach. [NaCu(2,4-HPdc)(2,4-Pdc)] (2,4-H2Pdc = pyridine-2,4-dicarboxylic acid) has been obtained from the hydrothermal reaction of the metalloligand [Cu(2,4-HPdc)2(H2O)2] NaOH, and a transition metal salt. [NaCu(2,4-HPdc)(2,4-Pdc)] is isostructural to [CuMn(2,4-Pdc)2] and crystallizes in the triclinic space group Pβar {1}$. The 3D structure is built up from [Cu(2,4-HPdc)2(H2O)2] metalloligands and [NaO6] octahedra in a pcu α-Po-like uninodal six-connected net. The compound is stable to 290 °C, and its crystal structure undergoes a 3 % volume expansion between room temperature and thermal decomposition. The unsaturated CuII centers at the surface act as a heterogeneous Lewis acid catalyst for the cyanosilylation of aldehydes and Knoevenagel C-C bond-forming reactions. The catalytic activity has been compared with those of other copper(II) porous metal-organic frameworks such as HKUST-1 and MOF-74.
- Larrea, Edurne S.,Fernández De Luis, Roberto,Orive, Joseba,Iglesias, Marta,Arriortua, María I.
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p. 4699 - 4707
(2015/10/19)
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- Two chelating-amino-functionalized lanthanide metal-organic frameworks for adsorption and catalysis
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Two chelating-amino-functionalized lanthanide metal-organic frameworks, Er-DADQ and Eu-DADQ, were synthesized with a flexible dicarboxylate ligand based on quinoxaline (H2DADQ = N,N′-dibenzoic acid-2,3-diaminoquinoxaline). N2 adsorpt
- Zhu, Yu,Wang, Yanmei,Liu, Pan,Xia, Changkun,Wu, Yunlong,Lu, Xiaoqing,Xie, Jimin
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p. 1955 - 1961
(2015/02/19)
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- Solvent-free heterogeneous catalysis for cyanosilylation in a modified sodalite-type Cu(II)-MOF
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Solvothermal reaction of Cu(OAc)2 and H3BTT·2HCl generated a sodalite-type metal-organic framework [(Cu4O0.27Cl0.73)3(H0.5BTT)8(H2O)12]·3MeOH·9DM
- Zhang, Ling-Juan,Han, Cai-Yun,Dang, Qin-Qin,Wang, Yan-Hong,Zhang, Xian-Ming
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p. 24293 - 24298
(2015/03/30)
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- Synthesis and reduction of α-fluoroacetonitriles
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A scalable approach for the cyanosilation of benzaldehydes and acetophenones using indium trichloride, a versatile, user friendly catalyst is developed. Cyanohydrin trimethylsilyl ethers are converted in the same pot to α-fluorophenyl acetonitriles which
- Shewalkar, Mukesh P.,Reddy, B. Veera Bhadra,Shinde, Devanand B.
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p. 222 - 226
(2015/06/23)
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- Insight into the catalytic properties and applications of metal-organic frameworks in the cyanosilylation of aldehydes
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Here we present a systematic investigation of the cyanosilylation of aldehydes with trimethylsilyl cyanide (TMSCN) by using metal-organic frameworks (MOFs) as catalysts. Four types of thermally stable MOFs (MIL-47 (V), MIL-53 (Al), MIL-101 (Cr), and UiO-6
- Zhang, Zhiguo,Chen, Jingwen,Bao, Zongbi,Chang, Ganggang,Xing, Huabin,Ren, Qilong
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p. 79355 - 79360
(2015/10/05)
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- A pyridyl-decorated MOF-505 analogue exhibiting hierarchical porosity, selective CO2 capture and catalytic capacity
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An expanded pyridyl-decorated MOF-505 analogue[Cu2(L)(H2O)2]·Gx (H4L = 5,5-(pyridine-2,5-diyl)diisophthalic acid, G = solvent molecule) has been solvothermally synthesized and reported. It exhibited r
- Dang, Qin-Qin,Zhan, Yu-Fen,Duan, Li-Na,Zhang, Xian-Ming
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p. 20027 - 20031
(2015/12/01)
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