62070-33-1Relevant academic research and scientific papers
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.
Electropolymerizable IrIII Complexes with β-Ketoiminate Ancillary Ligands
Ionescu, Andreea,Caligiuri, Rossella,Godbert, Nicolas,Candreva, Angela,La Deda, Massimo,Furia, Emilia,Ghedini, Mauro,Aiello, Iolinda
, p. 3025 - 3034 (2019/08/21)
A series of electropolymerizable cyclometallated IrIII complexes were synthesized and their electrochemical and photophysical properties studied. The triphenylamino electropolymerizable fragment was introduced by using triphenylamino-2-phenylpy
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
β-Enaminones over recyclable nano-CoFe2O4: a highly efficient solvent-free green protocol
Eidi, Esmaiel,Kassaee, Mohamad Z.,Cummings, Peter T.
, p. 5787 - 5799 (2018/05/14)
Abstract: β-Enaminone and its derivatives have emerged among the finest bioactive intermediates. High yields of several β-enaminones (86–97%) are achieved through treatment of substituted aromatic and aliphatic amines with cyclic/acyclic 1,3-diketones, over the magnetically separable cobalt ferrite nanoparticles (CoFe2O4 NPs). The latter was prepared upon co-precipitation. Its purity, fine crystallinity, elemental distributions, morphology, magnetic features, and thermal stability were confirmed by Fourier transform infrared, X-ray diffraction, energy dispersive X-ray spectrometry, scanning electron microscopy, vibrating sample magnetometry, and thermal gravimetric analysis analyses. Thus, CoFe2O4 NPs acted as an excellent green heterogeneous nanocatalyst for synthesis of β-enaminones and gave good recyclability, while showing insignificant loss of their activity. Graphical Abstract: [Figure not available: see fulltext.].
Facile synthesis of substituted pyrrole-fused isocoumarins from ninhydrin
Pathak, Sudipta,Kundu, Ashis,Pramanik, Animesh
experimental part, p. 5180 - 5183 (2011/10/12)
A simple and efficient procedure has been developed for the synthesis of substituted pyrrole-fused isocoumarins from easily available ninhydrin. The cyclic hemiaminal dihydroxy-indenopyrroles, the adducts of ninhydrin with enamines of acetylacetone, give pyrrole-fused isocoumarins upon heating in acidic medium. The process constitutes an interesting acid-catalyzed rearrangement to eight-membered lactams followed by intramolecular cyclization involving the amino and keto groups.
Solvent-free synthesis of β-enamino compounds promoted by Ferric(III) ammonium nitrate
Murthy,Venu,Govindh,Diwakar,Nagalakshmi,Singh
experimental part, p. 3047 - 3053 (2010/11/04)
A variety of β-enamino esters and β-enaminones can be synthesized by the reaction of 1,3-dicarbonyl compounds and various primary amines in the presence of catalytic amount of ferric(III) ammonium nitrate at room temperature. This method is simple, requires short reaction times, high yield and the reaction proceeds under solvent-free conditions.
