26567-78-2Relevant articles and documents
Passerini/tsuji–trost strategy towards pyrrole derivatives
Narboni, Noisette,El Kaim, Laurent
, p. 4242 - 4246 (2017)
The Passerini reaction of α,β-unsaturated aldehydes affords suitable substrates for a Tsuji–Trost reaction with NH-enamines. The latter behave as a 1,3-bisnucleophile, which leads to the formation of pyrrole derivatives with five points of diversity through a Tsuji–Trost/Michael addition/aromatization cascade.
Reactivity of chloroacetylated β-enamino compounds. Synthesis of heterocycles
Braibante, Mara E.F.,Braibante, Hugo T.S.,Costa, Carla C.,Martins, Demétrius B.
, p. 8079 - 8081 (2002)
Ethyl (E)-(3-amino substituted)-2-chloroacetyl-2-butenoates 2c-g, N-[(Z)-1-methyl-3-oxo-1-butenyl]-2-chloroacetamide 3a and ethyl (Z)-3-chloromethyl carboxamino-2-butenoate 3c, have been prepared from β-amino α,β-unsaturated ketone 1a and esters 1c-g and chloroacetyl chloride. The reactivity of these compounds was studied by the reactions with binucleophiles, such as hydrazine and hydroxylamine, to evaluate the electrophilic centers in the formation of the polyfunctionalized heterocyclic compounds.
Metal coordination compound, intermediate, preparation method and application thereof
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Paragraph 0314; 0322-0323; 0325, (2021/02/24)
The invention discloses a metal coordination compound, an intermediate, a preparation method and application thereof, and provides a metal coordination compound I, which can be independently used forcatalyzing ethylene homopolymerization or used for catal
Synthesis of multilayer polymer-immobilised nanosilver for catalytic study in condensation reaction of aniline and acetylacetone
Basu, Jayanta Kumar,Maji, Nitai Chandra,Sengupta, Sonali,Supriya
, (2020/07/03)
Abstract: Silver nanoparticles were synthesized in green route with non-hazardous polyvinyl alcohol and polyvinylpyrrolidone as stabilizing as well as reducing agents and water as green solvent. This silver nanoparticle-embedded polymer composite film, Ag/PVA–PVP was characterized by UV–Vis spectroscopy, SEM and TEM. The catalytic activity of this film was evaluated in reduction of p-nitrophenol, acylation of aniline and synthesis of a β-enaminone, 4-phenylamino-pent-3-en-one with appreciably good results. β-enaminone synthesis reaction was chosen to study the effects of kinetic parameters such as reactant quantity, catalyst loading, solvents and temperatures. In a typical reaction, 89% conversion was achieved. A probable chemical reaction mechanism is suggested. Kinetic model fitting for the synthesis of β-enaminone reaction was done for the first time here. Heterogeneous kinetic model following Eley-Rideal pathway showed an excellent data fitting for the reaction. The rate law parameters were estimated. Graphic abstract: Scheme. Synthesis and catalytic application of multilayer polymer-immobilised nanosilver in condensation reaction of aniline and acetylacetone.[Figure not available: see fulltext.].
A novel and reusable magnetic nanocatalyst developed based on graphene oxide incorporated strontium nanoparticles for the facial synthesis of β-enamino ketones under solvent-free conditions
Mousavi, Seyyed Rasul,Sereshti, Hassan,Rashidi Nodeh, Hamid,Foroumadi, Alireza
, (2018/10/26)
A novel magnetic SrFeGO nanocatalyst (NC) was synthesized through a simple sol–gel technique by introducing strontium and iron oxide nanoparticles onto graphene. The synthesized NC was characterized using FT-IR and FE-SEM. Subsequently, the catalytic activity of SrFeGO was tested in a reaction between β-dicarbonyl compounds and aniline derivatives to gain β-enamino ketone derivatives under solvent-free conditions. It was found that SrFeGO NC is a potential catalyst for the synthesis of β-enamino ketones. The β-enamino ketone produced by such reactions could be isolated in high purity without the need for chromatographic purifications. The newly prepared magnetic graphene oxide nanocomposite could be recovered and reused for numerous times with no significant decrease in efficiency. Moreover, the protocol has the advantages of excellent yielding (up to 98%) in short a reaction time, benefitting an easy workup procedure and being environmentally friendly.
Oxo - nitrided iron complexes, said oxo - nitrided iron complexes including catalyst system, and [khen [khen] [cyu] gay [syen [syen] it became of dienes (hole) for the polymerization method (by machine translation)
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Paragraph 0178-0186, (2019/04/30)
The present invention refers to general formula (I) or (II) having oxo - nitrided iron complexes are disclosed. Said general formula (I) or (II) having oxo - [khen [khen] [cyu] gay [syen [syen] it became of dienes (ball) is nitrided iron complexes for the
Metal complex, intermediate, and preparation method and application of metal complex and intermediate
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Paragraph 0119; 0128; 0130, (2019/12/25)
The invention discloses a metal complex, an intermediate, and a preparation method and application of the metal complex and intermediate. The metal complex I can be used for catalyzing ethylene homopolymerization independently or under action of a cocatal
β-Enaminone Synthesis from 1,3-Dicarbonyl Compounds and Aliphatic and Aromatic Amines Catalyzed by Iron Complexes of Fused Bicyclic Imidazo[1,5-a]pyridine Derived N-Heterocyclic Carbenes
Prakasham,Gangwar, Manoj Kumar,Ghosh, Prasenjit
, p. 295 - 313 (2019/01/24)
A series of Fe–NHC complexes (1–2)c of the fused bicyclic imidazo[1,5-a]pyridine framework of the type [CpFe(2-R-imidazo[1,5-a]pyridin-3-ylidene)(CO)2]BF4 {R = mesityl (1c), nPr (2c)} successfully carried out the synthesis of β-enamino ketones (3–10) and (17–27) and β-enamino esters (11–16) and (28–36) by the condensation of acyclic and cyclic 1,3-dicarbonyl compounds and various aliphatic and aromatic amines in the presence of light irradiation. Quite significantly, the catalytically relevant substrate adduct species of the type [CpFe(NHC)(acac)] (2e) and the product adduct species of the type [CpFe(NHC)(β-enaminone)] (2f) of the Fe–NHC precatalyst (2c) have been detected by mass spectrometry study. The [CpFe(2-R-imidazo[1,5-a]pyridin-3-ylidene)(CO)2]BF4 {R = mesityl (1c), nPr (2c)} complexes were obtained from their respective N–heterocyclic carbene precursors namely, the 2-R-imidazo[1,5-a]pyridin-2-ium chloride {R = mesityl (1a), nPr (2a)} by the reaction with CpFe(CO)2I in the presence of KN(SiMe3)2 followed by the salt metathesis reaction with AgBF4.
Synthesis and coordination chemistry of sterically hindered cobalt(II) β-ketoiminate complexes
Debnath, Suman,Arulsamy, Navamoney,Mehn, Mark P.
, p. 441 - 448 (2018/11/21)
The reactions of cobalt(II) chloride with α,β-unsaturated-β-ketoamines, CH3C([dbnd]O)CH[dbnd]C(NHR)CH3, where R = -phenyl, HLPh; R = -mesityl, HLmes; R = -2,6-diisopropylphenyl, HLdipp, and sodium hyd
Immobilization and DFT studies of Tin chloride on UiO-66 metal–organic frameworks as active catalyst for enamination of acetylacetone
Farzaneh, Faezeh,Kabir, Nasim,Geravand, Elham,Ghiasi, Mina,Ghandi, Mehdi
, p. 2231 - 2241 (2019/06/27)
An efficient synthetic method for the preparation of β-enaminones catalyzed by immobilization of SnCl2 on Zr-metal–organic frameworks (UiO-66 MOF) and designated as SnUiO66 is described. Also the prepared catalyst was characterized by Fourier t
