139484-11-0Relevant articles and documents
2,2′-(Arylmethylene)bis(3-hydroxy-5,5-dimethylcyclohex-2-enone) crystals formation via atom economy reaction and their antioxidant activity
Thakur, Deepa,Kaur, Manvinder,Malhi, Dharambeer Singh,Garg, Sonali,Sharma, Ajay,Sohal, Harvinder Singh
, p. 537 - 543 (2021)
Tetraketones with their diversified biological potencies became a highly significant class of oxygen-containing organic compounds. These are prepared by applying a simple Knoevenagel-Michael cascade procedure with 1,3-dicarbonyl compound and aldehydes. In
1,8-Diazabicyclo [5.4.0] undec-7-ene functionalized cellulose nanofibers as an efficient and reusable nanocatalyst for the synthesis of tetraketones in aqueous medium
Lasemi, Zahra,Tajbakhsh, Mahmood,Alinezhad, Heshmatoallah,Mehrparvar, Forough
, p. 3667 - 3682 (2020/05/13)
Abstract: 1,8-Diazabicyclo [5.4.0] undec-7-ene functionalized cellulose nanofibers (CNF@DBU[Cl]) were simply prepared and characterized by analytical techniques. Scanning electron microscope confirmed that CNF@DBU[Cl] was formed with average size of 30–60?nm. X-ray diffraction of CNF@DBU[Cl] showed that the crystalline structure of the cellulose nanofibers was remained unchanged after functionalization. According to elemental analyses and thermal gravimetric analysis, the loading amount of organic group on cellulose nanofibers was found to be 1.46?mmol/g. The catalytic activity of DBU functionalized cellulose nanofibers was studied for the synthesis of biologically important tetraketone derivatives in the reaction of aldehydes with 1,3-dicarbonyl compounds. In the presence of CNF@DBU[Cl], the corresponding tetraketones were obtained in 80–96% yields under very mild reaction conditions. The catalyst was recovered and reused four successive runs without significant loss of catalytic activity. This method showed several significant advantages including short reaction times, high yields of products, use of various substrates, convenient work-up, no necessity of extraction or chromatographic purification steps, environmentally friendly conditions and lack of use of any harmful solvent. Graphic abstract: [Figure not available: see fulltext.].
Selective synthesis of spiro and dispiro compounds using Mn(III)-based oxidation of tetracarbonyl compounds
Hisano, Kazuki,Nishikawa, Satomi,Nishino, Hiroshi,Shibuya, Keisuke,Yokote, Suzuka
supporting information, (2020/04/21)
The Mn(III)-based oxidation of methylenebis(cyclohexanedione)s and methylenebis(piperidinedione)s as a tetracarbonyl compound was investigated under various conditions, selectively producing spiro dihydrofurans and dispiro cyclopropanes depending on the solvent. The mechanism for the formation of the spiro dihydrofurans and dispiro cyclopropanes was discussed. In addition, a simple synthesis of a new type of alkaloid, 3,4,6,7,8,10-hexahydro-1H-pyrano[3,2-c:5,6-c’]dipyridine-1,9(2H)-diones, was demonstrated.
Simple and efficient synthesis of 2,2′-arylmethylenebis(3-hydroxy-5,5-dimethyl-2-cyclohexene-1-one) derivatives
Magyar, ágnes,Hell, Zoltán
, p. 2021 - 2023 (2019/11/19)
Abstract: A simple and efficient method for the synthesis of 2,2′-arylmethylenebis(3-hydroxy-5,5-dimethyl-2-cyclohexene-1-one) derivatives using 4 ? molecular sieves as catalyst is described. This approach offers several advantages such as high yields, mi
Carbon-based nanocatalyst:?An efficient and recyclable heterogeneous catalyst for one-pot synthesis of gem-bisamides, hexahydroacridine-1,8-diones and 1,8-dioxo-octahydroxanthenes
Kour, Jaspreet,Gupta, Monika,Chowhan, Bushra,Gupta, Vivek K.
, p. 2587 - 2612 (2019/07/23)
Abstract: In this abstract, we discuss the progress related to sulfonated carbon-based materials in various acid-catalyzed organic transformations which are then further utilized in medicinal field, laboratories and industries. A simple and novel methodol
Nickel NPs @N-doped titania: an efficient and recyclable heterogeneous nanocatalytic system for one-pot synthesis of pyrano[2,3-d]pyrimidines and 1,8-dioxo-octahydroxanthenes
Rajinder, Yogayta,Gupta, Monika,Kour, Jaspreet
, p. 1977 - 1992 (2019/04/30)
Abstract: Catalysis holds a very important and promising place in chemical industry. In a typical chemical transformation, the use of a catalyst reduces the reagent-based waste and enhances the reaction selectivity, thereby minimizing the chances of getti
Synthesis and characterization of the immobilized Ni-Zn-Fe layered double hydroxide (LDH) on silica-coated magnetite as a mesoporous and magnetically reusable catalyst for the preparation of benzylidenemalononitriles and bisdimedones (tetraketones) under
Gilanizadeh, Masumeh,Zeynizadeh, Behzad
, p. 8553 - 8566 (2018/06/08)
Herein, novel magnetic Fe3O4@SiO2@Ni-Zn-Fe layered double hydroxide (LDH) intercalated with water molecules and carbonate anions as interlayer contents was prepared as a new heterogeneous and separable nanocatalyst. The me
Synthesis of Tetraketones Using ZnS Nanoparticles as an Efficient Catalyst
Safaei-Ghomi, Javad,Asadian, Saeedeh,Nazemzadeh, Seyed Hadi,Shahbazi-Alavi, Hossein
, p. 430 - 434 (2017/12/28)
An efficient pseudo-three-component synthesis of tetraketones is described by one-pot condensation of 5,5-dimethylcyclohexane-1,3-dione and aldehydes using ZnS nanoparticles at room temperature. This method provides several advantages such as mild reactio
Selective and highly efficient synthesis of xanthenedione or tetraketone derivatives catalyzed by ZnO nanorod-decorated graphene oxide
Hasanzadeh Banakar, Sepideh,Dekamin, Mohammad G.,Yaghoubi, Amene
, p. 14246 - 14262 (2018/08/29)
ZnO nanorod-decorated graphene oxide (GO/ZnO), containing Lewis and Bronsted acid centers, was introduced as a selective, highly efficient and recoverable nanocatalyst for the pseudo three-component synthesis of diverse tetraketone or xanthenedione derivatives via condensation of aromatic aldehydes with 1,3-dicarbonyl compounds in short reaction times and good to excellent yields in H2O under refluxing and solvent-free conditions, respectively. Moreover, the GO/ZnO nanocomposite was recovered and reused at least four times without a significant decrease in its activity. Low loading of the catalyst, high to excellent yields, the elimination of any toxic heavy metals or corrosive reagents for modification of the catalyst, simple separation and purification of the products, and the reusability of the catalyst are the most significant advantages of this green protocol. The Royal Society of Chemistry and the Centre National de la Recherche Scientifique 2018.
