- Introduction of a trinuclear manganese(iii) catalyst on the surface of magnetic cellulose as an eco-benign, efficient and reusable novel heterogeneous catalyst for the multi-component synthesis of new derivatives of xanthene
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In this work, the new trinuclear manganese catalyst defined as Fe3O4@NFC@NNSM-Mn(iii) was successfully manufactured and fully characterized by different techniques, including FT-IR, XRD, TEM, SEM, EDX, VSM, and ICP analysis. There have been reports of the use of magnetic catalysts for the synthesis of xanthine derivatives. The critical potential interest in the present method include short reaction time, high yields, recyclability of the catalyst, easy workup, and the ability to sustain a variety of functional groups, which give economical as well as ecological rewards. Also, the synthesized catalyst was used as a recyclable trinuclear catalyst in alcohol oxidation reactions at 40 °C. The magnetic catalyst activity of Fe3O4@NFC@NNSM-Mn(iii) could be attributed to the synergistic effects of the catalyst Fe3O4@NFC@NNS-Mn(iii) with melamine. Employing a sustainable and safe low temperature, using an eco-friendly solvent, no need to use any additive, and long-term stability and magnetic recyclability of the catalyst for at least six successive runs are the advantages of the current protocol towards green chemistry. This protocol is a benign, environmentally friendly method for heterocycle synthesis. This journal is
- Ghamari Kargar, Pouya,Bagherzade, Ghodsieh,Eshghi, Hossein
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p. 4339 - 4355
(2021/02/03)
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- Sustainable synthesis of 1,8-dioxooctahydroxanthenes in deep eutectic solvents (DESs)
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Deep eutectic solvents are obtained by the fusion of two or more compounds: hydrogen bond donors (HBDs) and hydrogen bond acceptors (HBAs). They are formed by mixing the constituents with moderate heating (via hydrogen bond interactions). In this manuscript, the dual activities (as catalysts and reaction media) of six deep eutectic solvents were compared for the synthesis of 1,8-dioxooctahydroxanthenes at room temperature. Here DES 2, a combination of ZrOCl2·8H2O with ethylene glycol at a 1 : 2 ratio, was found to be the supreme catalyst among the six DESs and was reused for five batches. The photophysical properties of the xanthene derivatives were examined by UV-vis and fluorescence spectroscopy in THF. The synthesised molecules showed absorption maxima around 285-295 nm and emission maxima around 403-404 nm. The ground state dipole moments of all the molecules were calculated by the Debye-Guggenheim method using toluene as the non-polar solvent. All the synthesised molecules showed significant dipole moment values and are in good agreement with theoretical values.
- Shaibuna,Abbas, Anshad,Kariyottu Kuniyil, Muhammed Jeneesh,Sreekumar
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p. 8335 - 8344
(2021/05/21)
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- Incorporation of Keggin-based H3PW7Mo5O40into bentonite: synthesis, characterization and catalytic applications
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The Keggin-based molybdo-substituted tungstophosphoric acid, H3[PW7Mo5O40]·12H2O, were synthesized and incorporated with a bentonite clay by using a wetness impregnation method. The catalysts were cha
- Aher, Dipak S.,Khillare, Kiran R.,Shankarwar, Sunil G.
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p. 11244 - 11254
(2021/03/31)
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- Synthesis of Fe3O4-PVP nanocomposite functionalized with sulfonic group as an effective catalyst for one-pot synthesis of xanthene derivatives
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An effective and environmentally friendly Fe3O4-PVP nanocomposite functionalized with sulfonic group, Fe3O4-PVP-SO3H, was synthesized and characterized as the heterogeneous nanocatalyst for one-pot sy
- Karegar, Mohsen,Khodaei, Mohammad Mehdi
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p. 4537 - 4555
(2021/08/09)
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- Magnetic Fe–Cr–Ni oxide alloy nano-belts prepared from the chemical decomposition of a stainless steel screw (a top-down approach): an efficient and cheap catalyst for multicomponent reactions
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Abstract: A new, cheap, and accessible method has been used for the preparation of nano-belts from the chemical decomposition (top-down approach) of a cheap stainless steel screw and found as an efficient magnetically recyclable nanocatalyst for the prepa
- Kazemnejadi, Milad,Sharafi, Zeinab,Mahmoudi, Boshra,Zeinali, Atefeh,Nasseri, Mohammad Ali
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p. 777 - 787
(2019/11/21)
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- Immobilized copper-layered nickel ferrite on acid-activated montmorillonite, [(NiFe2O4?Cu)(H+-Mont)], as a superior magnetic nanocatalyst for the green synthesis of xanthene derivatives
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In this study, the immobilization of copper-layered nickel ferrite on the surface and in the cavities of acid-activated montmorillonite (H+-Mont) was investigated. In this context, magnetic nanoparticles (MNPs) of NiFe2O4
- Zeynizadeh, Behzad,Rahmani, Soleiman
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p. 28038 - 28052
(2019/09/30)
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- Calcined oyster shell nanoparticles (COS NPs): a new, efficient and reusable catalyst for one-pot rapid preparation of 1,8-dioxo-octahydroxanthenes under solvent-free conditions
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Calcined oyster shell nanoparticles (COS NPs) as a novel heterogeneous nanocatalyst were prepared and fully characterized by X-ray fluorescence analysis, Fourier transform infrared spectroscopy, X-ray powder diffraction, scanning electron microscopy equip
- Mohammadian, Narges,Akhlaghinia, Batool
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p. 1085 - 1103
(2017/10/07)
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- Fly ash supported NiO as an efficient catalyst for the synthesis of xanthene and its molecular docking study against plasmodium glutathione reductase
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A novel fly ash supported NiO (FA–NiO) nanocomposite solid heterogeneous catalyst has been prepared by impregnation of Ni(NO3)2 · 6H2O on thermally activated fly ash (FA) support. FT-IR spectroscopy, X-ray diffraction anal
- Borhade, Ashok V.,Tope, Dipak R.,Kushare, Sachin S.,Thakare, Savita V.
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p. 7459 - 7478
(2018/09/20)
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- Solvent-free Synthesis of 1,8-Dioxo-octahydroxanthenes and Tetra-hydrobenzo[a]xanthene-11-ones over Poly(N,N′-dibromo-N-ethylnaphtyl-2,7-sulfonamide)
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In this work, poly(N,N′-dibromo-N-ethylnaphtyl-2,7-sulfonamide) (PDNES) as a highly efficient catalyst was applied for the synthesis of 1,8-dioxo-octahydroxanthenes and tetra-hydrobenzo[a]xanthene-11-ones under neutral and solvent-free conditions.
- Khazaei, Ardeshir,Rezaei, Mahshid,Moosavi-Zare, Ahmad Reza,Saednia, Shahnaz
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p. 1088 - 1095
(2017/09/06)
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- Rapid, efficient and solvent-free synthesis of (un)symmetrical xanthenes catalyzed by recyclable sulfated polyborate
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The present study describes a rapid, simple and straightforward approach to the synthesis of 1,8-dioxo-octahydroxanthenes, 14-phenyl-14H-dibenzo[a,j]xanthene and tetrahydrobenzoxanthene-11-ones under solvent-free conditions using sulfated polyborate as a
- Patil, Manisha S.,Palav, Amey V.,Khatri, Chetan K.,Chaturbhuj, Ganesh U.
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supporting information
p. 2859 - 2864
(2017/06/27)
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- An efficient route to 1,8-dioxo-octahydroxanthenes and -decahydroacridines using a sulfated zirconia catalyst
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Sulfated zirconia results to be a very efficient catalyst for the synthesis of 1,8-dioxo-octahydroxanthenes and 1,8-dioxo-decahydroacridines without tedious work-up procedures. While 1,8-dioxo-octahydroxanthenes are prepared from aldehyde and 5,5-dimethyl-1,3-cyclohexenedione (dimedone), 1,8-dioxo-decahydroacridines are prepared from this reactant mixture with amines. This method provides a mild catalytic protocol for the synthesis of functionalized xanthene and acridine derivatives. The catalysts were characterized by XRD, FT-IR, TGA-DSC, SEM-EDAX and surface acidity and showed excellent re-usability up to 6 consecutive cycles.
- Kahandal, Sandeep S.,Burange, Anand S.,Kale, Sandip R.,Prinsen, Pepijn,Luque, Rafael,Jayaram, Radha V.
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p. 138 - 145
(2017/05/04)
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- Synthesis and antimicrobial screening of novel 9-{2-[(1H-1,2,3-triazol-4-yl)methoxy]phenyl}-3,3,6,6-tetramethyl-3,4,5,6,7,9-hexahydro-1H-xanthene-1,8(2H)-dione derivatives
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A series of novel 9-{2-[(1H-1,2,3-triazol-4-yl)methoxy]phenyl}-3,3,6,6-tetramethyl-3,4,5,6,7,9-hexahydro-1H-xanthene-1,8(2H)-dione derivatives were synthesized by a click chemistry approach. The structures of all the newly synthesized compounds were chara
- Kishore Kumar,Sunitha,Shankar,Murali Krishna,Lincoln, Ch. Abraham,Jalapathi
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p. 2011 - 2020
(2017/10/27)
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- Natural phosphate as an efficient and green catalyst for synthesis of tetraketone and xanthene derivatives
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Abstract: Natural phosphate was applied as an efficient and ecofriendly catalyst for the synthesis of tetraketones (2–2.5?h, 90–100?%) and xanthenes (6.5–8.5?h, 84–95?%) via Knoevenagel–Michael cascade reaction of aromatic aldehydes with 1,3-cyclic diketones in water and ethanol, respectively. This protocol provides several advantages over the traditional chemical synthesis, such as simple work-up, easy handling procedure, non-toxicity and stability of catalyst, low cost and environmental friendliness. Graphical Abstract: [Figure not available: see fulltext.]
- Fallah, Azadeh,Tajbakhsh, Mahmood,Vahedi, Hooshang,Bekhradnia, Ahmadreza
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- A unique opportunity for the utilization of glass wastes as a resource for catalytic applications: toward a cleaner environment
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Although glass recycling has been conducted since 1970s, and even though recycled glass waste has been used in the construction of various alternative products, the utilization of glass waste for catalytic applications has not been fully considered until
- Zolfagharinia, Somayeh,Koukabi, Nadiya,Kolvari, Eskandar
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p. 113844 - 113858
(2016/12/24)
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- Eggshell/Fe3O4 nanocomposite: Novel magnetic nanoparticles coated on porous ceramic eggshell waste as an efficient catalyst in the synthesis of 1,8-dioxo-octahydroxanthene
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An eggshell/Fe3O4 nanocomposite was synthesized simply via an economic and novel method, using recycled eggshell biowaste as a starting material and an aqueous solution of FeSO4 as a coating agent without any additional al
- Mosaddegh, Elaheh,Hosseininasab, Fatemeh Alsadat,Hassankhani, Asadollah
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p. 106561 - 106567
(2016/01/08)
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- Efficient synthesis of 1,8-dioxo-octahydroxanthenes catalyzed by β-cyclodextrin grafted with butyl sulfonic acid in aqueous media
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β-Cyclodextrin was functionalized with butyl sulfonic acid to give an efficient, eco-friendly catalyst for the synthesis of 1,8-dioxo-octahydroxanthenes via the one-pot condensation of aromatic aldehydes and active methylene carbonyl compounds in aqueous
- Gong, Kai,Wang, Hualan,Wang, Shuxin,Wang, Ying,Chen, Jinghua
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p. 1249 - 1255
(2015/09/01)
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- Nanocrystalline TiO2, via green combustion synthesis, as an efficient and reusable catalyst for the preparation of 1,8-dioxooctahydroxanthenes and 1,8-dioxodecahydroacridines
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Nanocrystalline TiO2 is synthesized using a green combustion method and used as a recyclable catalyst for the one-pot multicomponent synthesis of 1,8-dioxodecahydroacridines and 1,8-dioxooctahydroxanthenes, under solvent-free conditions. This m
- Eidi, Esmaiel,Kassaee, Mohammad Zaman,Nasresfahani, Zahra
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p. 793 - 797
(2016/01/25)
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- Fe3O4@SiO2-imid-PMAn magnetic porous nanospheres as recyclable catalysts for the one-pot synthesis of 14-aryl- or alkyl-14H-dibenzo[a,j]xanthenes and 1,8-dioxooctahydroxanthene derivatives under various conditio
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A facile, efficient and environmentally-friendly protocol for the synthesis of 14-aryl- or alkyl-14H-dibenzo[a,j]xanthenes and 1,8-dioxooctahydroxanthenes has been developed by one-pot condensation of various aldehydes with (i) β-naphthol and (ii) cyclic
- Esmaeilpour, Mohsen,Javidi, Jaber,Dehghani, Farzaneh,Nowroozi Dodeji, Fatemeh
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p. 5453 - 5461
(2014/12/10)
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- Ceric ammonium nitrate supported HY-zeolite: An efficient catalyst for the synthesis of 1,8-dioxo-octahydroxanthenes
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Ceric ammonium nitrate (CAN) supported HY-zeolite has been used as an efficient catalyst for the one-pot synthesis of 1,8-dioxo-octahydroxanthenes from the readily available 1,3-diketone and aromatic aldehydes under solvent-free conditions. The present me
- Sivaguru, Paramasivam,Lalitha, Appaswami
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p. 321 - 323
(2014/02/14)
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- Cupric nitrate catalyzed efficient and facile synthesis of 1,8-dioxo-octahydroxanthene derivatives
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An efficient and convenient approach to the synthesis of 1,8-dioxo-octahydroxanthene derivatives by using catalytic amount (10 mol %) of cupric nitrate [Cu(NO3)2·3H2O] in acetonitrile and the yields obtained are in good to
- Nasreen, Aayesha
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p. 7535 - 7538
(2013/08/23)
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- [HSO4] catalyzed efficient and green synthesis of 1,8-dioxo-octahydroxanthenes
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A simple and efficient procedure for synthesis of 1,8-dioxo- octahydroxanthenes by one-pot condensation of aromatic aldehydes with 5,5-dimethyl-1,3-cyclohexanedione under solvent-free conditions using ionic liquid [Et3NH][HSO4] as catalyst is described. The procedure offers several advantages including cleaner reaction profiles, use of easily available, cheap, recyclable and environmentally benign nature of catalyst, high yields, and simple experimental and work-up procedures.
- Zhou, Zhongqiang,Deng, Xiaocui
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- Catalysis by molecular iodine: A rapid synthesis of 1,8-dioxo- octahydroxanthenes and their evaluation as potential anticancer agents
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Molecular iodine facilitated the reaction of 5,5-dimethyl-1,3- cyclohexanedione with aromatic aldehydes in iso-propanol affording a variety of 1,8-dioxo-octahydroxanthenes in high yields. Most of the compounds synthesized showed good anti-proliferative pr
- Mulakayala, Naveen,Murthy,Rambabu,Aeluri, Madhu,Adepu, Raju,Krishna,Reddy, C. Malla,Prasad,Chaitanya,Kumar, Chitta S.,Basaveswara Rao,Pal, Manojit
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supporting information; experimental part
p. 2186 - 2191
(2012/04/18)
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- Catalyst-free sonochemical synthesis of 1,8-dioxo-octahydroxanthene derivatives in carboxy functionalized ionic liquid
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An efficient methodology for the synthesis of 1,8-dioxo-octahydroxanthene derivatives under ultrasonic irradiation at room temperature using carboxy functionalized ionic liquid 1-carboxymethyl-3-methylimidazolium tetrafluoroborate, [cmmim][BF4]
- Dadhania, Abhishek N.,Patel, Vaibhav K.,Raval, Dipak K.
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experimental part
p. 378 - 383
(2012/07/27)
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- Alumina-sulfuric acid catalyzed eco-friendly synthesis of xanthenediones
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Alumina-sulfuric acid has been developed as a cost-effective, recyclable, heterogeneous solid acid catalyst for the eco-friendly synthesis of 9-aryl-1,8-dioxododecahydroxanthenes and 9-aryl-3,3,6,6-tetramethyl-1,8- dioxooctahydroxanthenes through the cond
- Pramanik, Amit,Bhar, Sanjay
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experimental part
p. 17 - 24
(2012/06/16)
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- A novel polymeric catalyst for the one-pot synthesis of xanthene derivatives under solvent-free conditions
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A simple, efficient, and environmentally benign route was developed for the preparation of 14-aryl or alkyl- 14H-dibenzo[a,j]xanthene, 1,8-dioxo- octahydroxanthene and 12-aryl-8,9,10,12-tetrahydrobenzo[a]xanthene-11-ones from condensation of various aldeh
- Maleki, Behrooz,Barzegar, Shahram,Sepehr, Zeinalabedin,Kermanian, Mina,Tayebee, Reza
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p. 757 - 765
(2013/02/22)
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- An efficient one-pot solvent-free synthesis and photophysical properties of 9-aryl/alkyl-octahydroxanthene-1,8-diones
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A facile and efficient protocol for the synthesis of 9-aryl/alkyl-3,3,6,6- tetramethyl-1,2,3,4,5,6,7,8-octahydroxanthene-1,8-diones has been developed by one-pot reaction of dimedone with aldehydes in the presence of InCl3 or P2Osub
- Verma, Girijesh K.,Raghuvanshi, Keshav,Verma, Rajiv K.,Dwivedi, Pratibha,Singh
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experimental part
p. 3698 - 3704
(2011/06/17)
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- Reaction in dry media: Silica gel supported ferric chloride catalyzed synthesis of 1,8-dioxo-octahydroxanthene derivatives
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Herein, we describe a green procedure for the one-pot preparation of 1,8-dioxo-octahydroxanthene derivatives by condensation of dimedone and substituted benzaldehydes in the presence of FeCl3-SiO2 as an efficient and heterogeneous catalyst under microwave
- Shaterian, Hamid Reza,Hosseinian, Asghar,Ghashang, Majid
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experimental part
p. 3136 - 3144
(2009/09/25)
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- Efficient synthesis of 1,8-dioxo-octahydroxanthenes using HClO4/SiO2 as catalyst
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Silica supported perchloric acid (HClO4/SiO2) is found to be a heterogeneous recyclable catalyst for rapid and efficient synthesis of 1,8-dioxo-octahydroxanthenes with good to excellent yields in solvent free conditions. The catalyst
- Mahdavinia, Gholam Hossein,Bigdeli, Mohammad A.,Hayeniaz, Yaser Saeidi,Nemati, Firouzeh
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scheme or table
p. 3077 - 3083
(2009/05/27)
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- Synthesis and spectroscopic properties of novel benzo[a]phenanthridines
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Condensation of arylidene-2-naphthylamines with 5,5-dimethylcyclohexane-1,3-dione (dimedone) gives novel 2,2-dimethyl-5-R-1,2,3,4,5,6-hexahydrobenzo[a]phenanthridin-4-ones. Treatment of azomethines containing an ortho hydroxyl group in the "aldehyde" fragment gives the corresponding 3,3,6,6-tetramethyl-9-R-1,2,3,4,5,6,7,8-octa-hydroxanthene-1,8-diones. The IR, UV, PMR, and mass spectra of the compounds synthesized have been studied. 1996 Plenum Publishing Corporation.
- Kozlov,Gusak,Makhnach
-
-