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Camphor sulfonic acid catalyzed one-pot pseudo three-component synthesis of a series of 1,8-dioxo-octahydroxanthenes and comparative crystal structures investigations and Hirshfeld surface analysis of five such derivatives
A simple and convenient protocol has been developed for the synthesis of 1,8-dioxo-octahydroxanthenes via one-pot pseudo three-component reactions...
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Synthesis, identification and application of Fe3O4@THAM-Mercaptopyrimidine nanoparticles as a novel and highly recyclable nanocatalyst in one-pot multicomponent synthesis of 1,8-dioxo-octahydroxanthenes and polyhydroquinolines
Fe 3 O 4 @THAM-Mercaptopyrimidine nanoparticles, as eco-friendly and inexpensive compounds, catalyzed the synthesis of 1,8-dioxo-octahydroxanthenes...
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An eco-friendly approach to synthesize arylmethylene bis(3-hydroxy-5,5’-dimethyl-2-cyclohexene-1-ones) and 1,8-dioxo-octahydroxanthenes
A new method has been proposed for the green and efficient synthesis of xanthenediones and their corresponding open-chain analogs aryl-methylene...
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Synthesis of 1,8‐dioxo-octahydroxanthenes utilizing nanodiatomite@melamine-SO3H as a novel heterogeneous catalyst under solvent-free conditions
A new heterogeneous catalyst, nanodiatomite@melamine-SO 3 H, was introduced for synthesizing 1,8‐dioxo-octahydroxanthenes via multicomponent reactions...
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Fabrication of activated carbon sulfuric acid as an excellent and novel solid acid catalyst, evaluating its catalytic activity in synthesizing 1,8-dioxo-octahydroxanthenes and 14-aryl-14H-dibenzo[a,j]xanthenes
In this work, for the first time, a novel and innovative procedure has been utilized to chemically functionalize activated carbon (AC) based on the...
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Grafting of sulphamic acid on functionalized sawdust: A novel solid acid catalyst for the synthesis of 1,8-dioxo-octahydroxanthenes
AbstractA solid acid catalyst bearing sulphamic acid on sawdust (SA@Sawdust) was designed as a novel heterogeneous catalyst. The structure of...
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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
AbstractIn this abstract, we discuss the progress related to sulfonated carbon-based materials in various acid-catalyzed organic transformations...
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A caffeine-based ionic liquid as a novel and eco-friendly catalyst for the synthesis of 1,8-dioxo-octahydroxanthenes under solvent-free conditions
A new Brönsted acidic ionic liquid has been synthesized using caffeine and p -toluenesulfonic acid as precursors. The IL was fully characterized by...
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Cellulose-based surface-modified heterogeneously feasible novel solid acid catalyst to access bioactive heterocycles
Surface-modified cellulose-based heterogeneously active catalyst was prepared by covalent anchoring of chlorosulphonic acid on amino-functionalized...
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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
AbstractCatalysis holds a very important and promising place in chemical industry. In a typical chemical transformation, the use of a catalyst...
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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
AbstractA new, cheap, and accessible method has been used for the preparation of nano-belts from the chemical decomposition (top-down approach) of a...
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Sonochemical Protocols for Heterocyclic Synthesis: A Representative Review
In the present era of the industrial revolution, we all are familiar with ever-increasing environmental pollution released from various chemical...
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Polyacrylamide Supported Reagents and Catalysts in Various Organic Reactions
Functional polymers as solid-supported reagents and catalysts for organic synthesis were conventionally based on cross-linked polystyrene (PS)....
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Synthesis of Fe3O4-PVP nanocomposite functionalized with sulfonic group as an effective catalyst for one-pot synthesis of xanthene derivatives
An effective and environmentally friendly Fe 3 O 4 -PVP nanocomposite functionalized with sulfonic group, Fe 3 O 4 -PVP-SO 3 H, was synthesized and...
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Green and cost effective protocol for the synthesis of 1,8-dioxo-octahydroxanthenes and 1,8-dioxo-decahydroacridines by using sawdust sulphonic acid
AbstractA heterogeneous solid acid catalyst has been prepared by covalent grafting of chlorosulphonic acid on the surface of sawdust (SD-OSO 3 H). The...
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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
Calcined oyster shell nanoparticles (COS NPs) as a novel heterogeneous nanocatalyst were prepared and fully characterized by X-ray fluorescence...
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Fe3O4@THAM-piperazine: a novel and highly reusable nanocatalyst for one-pot synthesis of 1,8-dioxo-octahydro-xanthenes and benzopyrans
AbstractA novel magnetically heterogeneous nanocatalyst has been successfully synthesized via the immobilization of piperazine on tris...
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Design, Preparation and Identification a Mesoporous Bi-functional Organic–inorganic Hybrid Magnetic Catalyst for Selective and Effectual Synthesis 10,11-Dihydrochromeno[4,3-b]chromene-6,8(7H,9H)-dione Derivatives
In the current work, N,N ′-bipyridyl ( N - sulfonic acid) ( N ′- silica-n-propyl) propane mesylate/chloride bonded to Fe 3 O 4 coated with bilayer silica...
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Sulfonic acid-functionalized polyallylamine (sevelamer) as an efficient reusable strong solid acid catalyst for the synthesis of xanthenes derivatives
Sevelamer (polyallyamine resin)-supported sulfonic acid (S-SO 3 H) has been prepared from the reaction of sevelamer with chlorosulfonic acid and...
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[Bmim]HSO4-Catalyzed Synthesis of Tetrasubstituted Imidazoles as Potential Mutant Isocitrate Dehydrogenase 1 Inhibitors
AbstractAn ecofriendly, simple, and efficient one-pot protocol has been developed for the synthesis of 1,2,4,5-tetrasubstituted imidazoles by the...