15782-02-2Relevant articles and documents
Synthesis, experimental and DFT studies on crystal structure, FT-IR, 1H, and 13C NMR spectra, and evaluation of aromaticity of three derivatives of xanthens
Zare Fekri,Nikpassand,Goldoost
, p. 2352 - 2360 (2013)
Several derivatives of xanthenes are prepared by the condensation of aldehydes and dimedone in H2O in the presence of a catalytic amount of trichlorotriazine. The crystalline products were characterized by FTIR, 1H, and 13
Reaction in dry media: Silica gel supported ferric chloride catalyzed synthesis of 1,8-dioxo-octahydroxanthene derivatives
Shaterian, Hamid Reza,Hosseinian, Asghar,Ghashang, Majid
, p. 3136 - 3144 (2008)
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
Magnetically recoverable, nanoscale-supported heteropoly acid catalyst for green synthesis of biologically active compounds in water
Rafiee, Ezzat,Eavani, Sara,Khodayari, Maryam
, p. 1513 - 1518 (2013)
12-Tungstophosphoric acid supported on aerosil silica and silica-coated γ-Fe2O3 nanoparticles was prepared and characterized using transmission electron microscopy, scanning electron microscopy, and inductively coupled plasma atomic emission spectroscopy. The catalytic activity of the two prepared catalysts was compared in the synthesis of 1,8-dioxo-9,10- diaryldecahydroacridines in water. 12-Tungstophosphoric acid was highly dispersed on the silica-coated γ-Fe2O3 nanoparticles and showed higher activity and a higher reuse number compared with the acid supported on aerosil silica. The catalyst could be recovered simply by using an external magnetic field and could be reused several times without appreciable loss of its catalytic activity.
Aqueous synthesis of 1,8-dioxo-octahydroxanthenes using supported cobalt nanoparticles as a highly efficient and recyclable nanocatalyst
Rajabi, Fatemeh,Dios, María Pinilla-de,Abdollahi, Mohammad,Luque, Rafael
, p. 95 - 100 (2019)
A highly efficient and environmentally friendly approach for the synthesis of 1,8-dioxo- octahydroxanthenes has been developed catalysed by a supported cobalt nanoparticle catalyst (CoNP@SBA-15) in water. The use of this heterogeneous catalytic system off
One-pot solvent-free synthesis of 1,8-dioxo-octahydroxanthene derivatives using sulfonic acid-functionalized LUS-1 and their antimicrobial activities
Rahimifard, Mahshid,Mohammadi Ziarani, Ghodsi,Badiei, Alireza,Asadi, Shima,Abolhasani Soorki, Ali
, p. 3847 - 3861 (2016)
An efficient acidic functionalization of mesoporous silica LUS-1 (Laval University silica) was carried out by grafting and oxidation of (3-mercaptopropyl)trimethoxysilane. The functionalized LUS-1 was characterized by different methods such as TGA, XRD, B
Direct synthesis of xanthenes from benzyl alcohols using choline peroxydisulfate ionic liquid as a reagent under otherwise solvent-free conditions
Soleimani, Omid,Hosseinian, Asghar
, p. 337 - 340 (2018)
14-Aryl-14H-dibenzo[a,j]xanthenes and 1,8-dioxo-octahydroxanthenes were synthesised directly from benzyl alcohols by a tandem catalytic process using choline peroxydisulfate (ChPS). The synthesis proceeds through two steps: an oxidation of the benzyl alco
Condensation of aromatic aldehydes with 5,5-dimethyl-1,3-cyclohexanedione without catalyst
Tu, Shujiang,Zhou, Jianfeng,Lu, Zaisheng,Deng, Xu,Shi, Daqing,Wang, Suhui
, p. 3063 - 3067 (2002)
The condensation of aromatic aldehyde with 5,5-dimethyl-1,3-cyclohexanedione is carried out in ethylene glycol as solvent without catalyst.
Cellulose sulfonic acid: An efficient heterogeneous catalyst for the synthesis of 1, 8-Dioxo octahydroxanthenes
Oskooie, Hossein A.,Tahershamsi, Leili,Heravi, Majid M.,Baghernejad, Bita
, p. 717 - 720 (2010)
1,8-Dioxo-octahydroxanthenes have been synthesized good yields via a reaction of aldehydes and dimedone in the presence of cellulose sulfonic acid as a heterogeneous catalyst under solvent-free condition.
ZnO nanoparticles: An efficient and reusable catalyst for one-pot synthesis of 1,8-dioxo-octahydroxanthenes
Lasemi, Zahra,Mehrasbi, Ebrahim
, p. 2855 - 2866 (2015)
Abstract Zinc oxide (ZnO) nanoparticles have been used as an efficient and recyclable catalyst for one-pot synthesis of 1,8-dioxo-octahydroxanthene derivatives via condensation of aromatic aldehydes and 5,5-dimethyl-1,3- cyclohexanedione under mild reacti
Fly ash supported NiO as an efficient catalyst for the synthesis of xanthene and its molecular docking study against plasmodium glutathione reductase
Borhade, Ashok V.,Tope, Dipak R.,Kushare, Sachin S.,Thakare, Savita V.
, p. 7459 - 7478 (2018)
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
Polyvinylpolypyrrolidone-supported boron trifluoride: A mild and efficient catalyst for the synthesis of 1,8-dioxooctahydroxanthenes and 1,8-dioxodecahydroacridines
Mokhtary, Masoud,Mirfarjood Langroudi, Seyed Abdollah
, p. 1489 - 1494 (2014)
Polyvinylpolypyrrolidone-supported boron trifluoride has been studied for the synthesis of 1,8-dioxooctahydroxanthenes and 1,8-dioxodecahydroacridines. The reaction proceeded via condensation of: (1) aromatic aldehydes (1 eq.) and 5,5-dimethyl-1,3-cyclohe
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
Ghamari Kargar, Pouya,Bagherzade, Ghodsieh,Eshghi, Hossein
, p. 4339 - 4355 (2021/02/03)
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
Tungsten oxides: green and sustainable heterogeneous nanocatalysts for the synthesis of bioactive heterocyclic compounds
Siddiqui,Shaikh, Shoyebmohamad F.,Totawar, Balaji B.,Dumpala, Madhuri,Ubaidullah, Mohd,Thamer, Badr M.,Mane, Rajaram S.,Al-Enizi, Abdullah M.
supporting information, p. 2032 - 2041 (2021/02/26)
Tungsten oxide (WO3) as an efficient heterogeneous catalyst was preparedviaa simple hydrothermal route for the synthesis of a wide range of bioactive heterocyclic compounds. The present investigation deals with the rapid and low-cost synthesis
