3334-98-3Relevant academic research and scientific papers
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.].
Cu catalyzed cross-dehydrogenative coupling reaction for the synthesis of 3-hydroxy-2-pyrrolidinones
Sarkar, Rajib,Mukhopadhyay, Chhanda
supporting information, p. 3069 - 3076 (2018/07/06)
A new convenient strategy for the synthesis of 3-hydroxy-2-pyrrolidinone derivatives featuring regioselective C–C coupling has been developed. This is a Cu (II) catalyzed cross dehydrogenative coupling (CDC) involving enamino-ketones of benzyl amines and di-alkyl acetylenedicarboxylate, followed by cyclization by primary amines. TBHP (tert-butyl hydroperoxide) has been used as the oxidant to promote the coupling protocol. This synthetic route principally demonstrates the scope of CDC reaction and also applicable to gram-scale synthesis.
FeCl3-Catalyzed Combinatorial Synthesis of Functionalized Spiro[Indolo-3,10′-indeno [1,2- b ]quinolin]-trione Derivatives
Mondal, Animesh,Mukhopadhyay, Chhanda
supporting information, p. 404 - 408 (2016/01/15)
An efficient, inexpensive, environmentally friendly and high yield one-pot route to new spiro[indolo-3,10′-indeno [1,2-b]quinolin]-trione derivatives has been developed, involving three-component reaction of enaminones, N-substituted isatins and Indane-1,3-dione catalyzed by FeCl3. The approach to this spiro-heterocycle is noteworthy because it results in the formation of three new σ (two C-C and one C-N) bonds in a single operation, leading to the construction of novel spiro skeleton. This method works on a large scale in excellent yields.
Zeolite (ZSM-5) as a highly efficient and heterogeneous catalyst for the synthesis of β-Enaminones and β-Enamino esters
Shekhar, Amiya,Pathak, Devendra Deo
experimental part, p. 1632 - 1637 (2012/05/07)
Several β-enaminones and β-enaminoesters have been synthesized in high yields from amine and β-diketone in the presence of Zeolite (ZSM-5) as a catalyst. This method is applicable to both cyclic and acyclic ketones with aromatic and aliphatic amines. Copyright E-Journal of Chemistry 2004-2011.
A green solventless protocol for the synthesis of β-Enaminones and β -Enamino esters using silica sulfuric acid as a highly efficient, heterogeneous and reusable catalyst
Hasaninejad, Alireza,Zare, Abdolkarim,Mohammadizadeh, Mohammad Reza,Shekouhy, Mohsen,Moosavi-Zare, Ahmad Reza
experimental part, p. 1546 - 1554 (2011/12/05)
Silica sulfuric acid is utilized as a green, highly efficient, heterogeneous and recyclable catalyst for the preparation of β-enaminones and β -enamino esters from amines and β -dicarbonyl compounds under solvent-free conditions at 80 °C. Using this method, the title compounds are produced in high to excellent yields and in short reaction times.
Silica-supported LiHSO4 as a highly efficient, heterogeneous and reusable catalytic system for the solvent-free synthesis of β-enaminones and β-enamino esters
Hasaninejad,Zare,Mohammadizadeh,Shekouhy
experimental part, p. 69 - 76 (2010/10/21)
A highly efficient, simple and green procedure for the synthesis of β-enaminones and β-enamino esters is described. The reaction of aromatic and aliphatic amines with β-dicarbonyl compounds using catalytic amount of silica-supported LiHSO4 (LiHSO4/SiO2) under solvent-free conditions at 80 °C affords the title compounds in high to excellent yields and in short reaction times.
