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
doaj +3 more sources
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
doaj +2 more sources
Biological evaluation and simple method for the synthesis of tetrahydrobenzo[a]xanthenes-11-one derivatives [PDF]
Journal of Saudi Chemical Society, 2017 A simple method for the synthesis of Tetrahydrobenzo[a]xanthenes-11-one derivatives in the presence of BF3.SiO2, and its antibacterial activity was assessed against Pseudomonas syringae, Xanthomonas citi and Pectobacterium carotovorum.
Ali Akbari, Asghar Hosseini-Nia
doaj +2 more sources
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
doaj +2 more sources
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
doaj +2 more sources
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
doaj +2 more sources
An Electrochemical Oxidative Two-Fold C─C Bond Formation of Indolizines With Xanthenes. [PDF]
Chem Asian JAn efficient and mild electrochemical strategy for the direct dehydrogenative C─C coupling of indolizines and xanthenes is developed. A series of novel indolizine derivatives have been obtained in yields of up to 85% without transition metal catalysts or
Feng C, Zhu M, Xu Y, Li M, Shen Z.
europepmc +2 more sources
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
doaj +1 more source
Molecules, 2022 Novel cyano-benzylidene xanthene derivatives were synthesized using one-pot and condensation reactions. A diprotic Brønsted acid (i.e., oxalic acid) was used as an effective catalyst for the promotion of the synthesis process of the new starting xanthene–
Mohammed A. Amin +11 more
doaj +1 more source
, 2023 An efficient palladium-copper catalyzed regioselective C–C bond cleavage/C–H bond activation/C–C bond reformation reaction to synthesize 9,9-diaryl-xanthenes has been developed.
Lijun Wang (176511) +7 more
core +1 more source