Phosphosulfonic acid, an efficient solid acid catalyst for the one-pot preparation of 14-aryl-14H-dibenzo[a,j]xanthenes and 1,8-dioxo-octahydro-xanthenes under solvent-free conditions [PDF]
Journal of the Serbian Chemical Society, 2013 An expeditious procedure for the synthesis of 14- aryl-14H-dibenzo[a,j]xanthenes and 1,8-dioxo-octahydro-xanthenes through one-pot pseudo three component condensation of β-naphthol or dimedone with various aryl aldehydes is described.
Kiasat Reza Ali +2 more
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Nano-Silica Phosphoric Acid: An Efficient Catalyst for One-Pot Synthesis of Tetrahydrobenzo[a]xanthenes-11-one Under Solvent- Free or Sonication Conditions [PDF]
Journal of Nanostructures, 2012 Two simple protocols for the synthesis of tetrahydrobenzo[a]xanthenes-11-ones using nano silica phosphoric acid are reported. Short reaction times, high yields, reusability of catalyst and easy workup are some advantages of these protocols.
A. Bamoniri +2 more
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Visible light-promoted metal-free aerobic photooxidation of xanthenes, thioxanthenes and dihydroacridines in deep eutectic solvents [PDF]
Tetrahedron Green Chem, 2023 Benzylic systems such as 9H-xanthenes, 9H-thioxanthenes and 9,10-dihydroacridines can be easily oxidized to the corresponding xanthones, thioxanthones or acridones, respectively, in deep eutectic solvents by a visible blue light-promoted photooxidation ...
Sarah-Jayne Burlingham +3 more
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A series of xanthenes inhibiting Rad6 function and Rad6-Rad18 interaction in the PCNA ubiquitination cascade [PDF]
iScience, 2022 Summary: Ubiquitination of proliferating cell nuclear antigen (PCNA) triggers pathways of DNA damage tolerance, including mutagenic translesion DNA synthesis, and comprises a cascade of reactions involving the E1 ubiquitin-activating enzyme Uba1, the E2 ...
Gabriel Fenteany +6 more
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Efficient, One-Pot Synthesis of Tetrahydrobenzo[a]xanthen-11-ones and Dibenzo[a,j]xanthenes Using Trichloroacetic Acid as a Solid Heterogeneous Catalyst Under Solvent-Free Conditions [PDF]
E-Journal of Chemistry, 2011 A simple and efficient method have been described for the synthesis of 12-aryl-8,9,10,12-tetrahydrobenzo[a]xanthen-11-one derivatives employing a one-pot, three-component reaction of aryl aldehydes, 2-naphthol and dimedone in the presence of ...
Zahed Karimi Jaber +3 more
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E-Journal of Chemistry, 2012 Saccharin sulfonic acid (SaSA) is utilized as a highly efficient, green and inexpensive sulfonic acid-containing catalyst for the following one-pot multi-component organic transformations: (i) the condensation of dimedone (2 eq.) with aromatic aldehydes (
Abdolkarim Zare +3 more
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Bulletin of Chemical Reaction Engineering & Catalysis, 2018 In this work, a novel Brønsted acidic ionic liquid namely triethylaminium-N-sulfonic acid trifluoroacetate {[TEASA][TFA]} has been synthesized by the reaction of NEt3 with ClSO3H, and then with CF3CO2H. The ionic liquid has been characterized by studying
Atefeh Saadat +3 more
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Pharmaceuticals, 2022 Nowadays, leishmaniasis constitutes a public health issue in more than 88 countries, affecting mainly people from the tropics, subtropics, and the Mediterranean area. Every year, the prevalence of this infectious disease increases, with the appearance of
Carlos F. M. Silva +3 more
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Molecules, 2021 A ChCl: Gly (DESs) promoted environmentally benign method was developed for the first time using the reaction of aryl aldehydes and dimedone to give excellent yields of xanthene analogues.
Mashooq A. Bhat +4 more
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Applied Sciences, 2023 Recently, the combined application of synergistic therapies for photodynamic antimicrobial chemotherapy has become important to obtain more efficient results.
Daniel Ziental +5 more
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