- 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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- Epoxides as a new feedstock for the synthesis of xanthene derivatives by using highly efficient, reusable tungstated zirconia heterogeneous catalyst
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This paper reports the synthesis of tungstated zirconia (WOx/ZrO2) by sol-gel technique and its characterization with XRD, FT-IR, Raman, TGA, N2 adsorption–desorption isotherms, NH3-TPD, SEM, and TEM analysis. T
- Ganga, Venkata Subba Rao,Choudhary, Manoj K.,Tak, Rajkumar,Kumari, Prathibha,Abdi, Sayed H.R.,Kureshy, Rukhsana I.,Khan, Noor-ul H.
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- Solvent-free synthesis of 14-aryl-14H-dibenzo[a-j]xanthenes using Fe3O4@Al2O3@SiO2@Fe2O3 as a green catalyst
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We report, a novel, green, nano-sized particles as a sandwich nano-capsule multilayer catalyst (SNC@MC) [Fe3O4@Al2O3@SiO2@Fe2O3] for the efficacious one-pot synthesis of 14-aryl-
- Darya, Naghmeh,Tajik, Hassan
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supporting information
p. 3546 - 3564
(2021/11/04)
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- A clean, mild, and efficient preparation of aryl 14H-benzo[a,j]xanthene leuco-dye derivatives via nanocatalytic MCM-41-SO3h under ultrasonic irradiation in aqueous media
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Aim and Objective: The present study has developed an efficient and eco-friendly protocol for the synthesis of aryl-14-H-dibenzo[a,j] xanthenes through a one-pot condensation reaction of 2-naphthol and arylaldehydes in aqueous media using the nanocatalyti
- Fathollahi, Mostafa,Rostamizadeh, Shahnaz,Amani, Ali M.
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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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- Ruthenium/Yb(OTf)3-cocatalyzed dehydrogenative synthesis of 14-substituted-14-H-dibenzo[a,j]xanthenes from β-naphthol and alcohols
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By employing [P^O]2Cl2Ru/Yb(OTf)3 as a new and efficient catalyst system [P^O = 2-(diphenylphosphino)-2,4-dimethylpentan- 3-one], readily available, abundant alcohols were firstly employed for dehydrogenative synthesis of 14-substituted-14-H-dibenzo[a,j]xanthenes. Due to the inherent stability of alcohols compared to aldehydes, the presented synthetic protocol is adaptable to a broad substrate scope, there is no need for stringent protection in the whole preparation process, providing the potential to prepare products that are currently inaccessible or challenging to prepare using conventional methods. It is an important complement to the conventional synthetic methodologies. This journal is the Partner Organisations 2014.
- Wang, Xiaoting,Chen, Mengmeng,Xie, Feng,Zhang, Min
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p. 14744 - 14751
(2014/04/17)
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- Facile catalyzed preparation of 14-aryl- or alkyl-14-H-dibenzo[a,j] xanthenes by dodecylphosphonic acid and dodecylsulfamic acid: Environmentally benign methods
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Under mild- and solvent-free conditions, one-pot preparation of 14-alkyl- or 14-aryl-14-H-dibenzo[a,j]xanthenes could proceed in the presence of catalytic amounts of dodecylphosphonic acid (DPA) and dodecylsulfamic acid (DSA) in good to excellent yields.
- Ghassamipour, Soheila,Sardarian, Ali Reza
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experimental part
p. 669 - 674
(2012/08/27)
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- Diversity oriented synthesis of benzoxanthene and benzochromene libraries via one-pot, three-component reactions and their anti-proliferative activity
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Libraries of benzoxanthenes, as well as of benzochromenes, were efficiently synthesized via one-pot, three-component reactions of 2-naphthol, aldehydes, and cyclic 1,3-diketones/malononitrile/ethyl cyanoacetate in the presence of catalytic amount of eerie
- Kumar, Atul,Sharma, Siddharth,Maurya, Ram Awatar,Sarkar, Jayant
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scheme or table
p. 20 - 24
(2010/10/03)
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- Br?nsted acidic ionic liquid as an efficient and reusable catalyst for synthesis of 14-aryl-or 14-alkyl-14 H-dibenzo[a,j]xanthenes under solvent-free conditions
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A mild and efficient method has been developed for the preparation of 14-aryl-or 14-alkyl-14H-dibenzo[a,j]xanthenes from one-pot condensation of aldehydes with 2-naphthol using catalytic amount of Br?nsted acidic ionic liquid ([TEBSA][HSO) under thermal s
- Hajipour, Abdol R.,Ghayeb, Yosof,Sheikhan, Nafisehsadat,Ruoho, Arnold E.
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experimental part
p. 741 - 744
(2010/06/13)
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- Heterogeneous catalyst: Amberlyst-15 catalyzes the synthesis of 14-substituted-14H-dibenzo[a,j]xanthenes under solvent-free conditions
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A one-pot condensation of β-naphthol with aldehydes in the presence of Amberlyst-15 to give 14-substituted-14H-dibenzo[a,j]xanthenes under solvent-free condition is described.
- Ko, Shengkai,Yao, Ching-Fa
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p. 8827 - 8829
(2007/10/03)
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