Topic
Xanthene
About: Xanthene is a research topic. Over the lifetime, 2132 publications have been published within this topic receiving 34803 citations. The topic is also known as: Xanthene & dibenzo[a,e]pyran.
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TL;DR: In this paper, the synthesis of one diimine and two iminophosphine chiral ligands bearing a xanthene backbone in four and five steps is described.
23 citations
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TL;DR: This work used a unique strategy (adding moderate water to DES) to effectively prepare nanomaterials and used the electrode modified with the as-prepared nanomMaterials as the anode to the electrochemical oxidation synthesis.
Abstract: Deep eutectic solvents (DESs), called a new generation of green solvents, have broad applied in synthesis of nanomaterials due to their remarkable physicochemical properties In this work, we used a unique strategy (adding moderate water (10%) to DES) to effectively prepare nanomaterials Flower-like AuPt alloy nanoparticles were successfully synthesized using one-step electrochemical reduction method at a low potential of −030 V (vs Pt) and a low temperature of 30 °C In this process, the DES acted as solvent and shape-directing agent More importantly, we used the electrode modified with the as-prepared nanomaterials as the anode to the electrochemical oxidation synthesis The glassy carbon electrode modified with the AuPt nanoflowers was directly employed to the electro-oxidation of xanthene (XT) to xanthone (XO) under a constant low potential of 080 V (vs Ag/AgCl) and room temperature, with a high yield of XO Moreover, the synthesis process was milder and more environment-friendly than conventional organic syntheses This new strategy would have a promising application in electroorganic synthesis fields
23 citations
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TL;DR: In this article, a simple and efficient procedure for the synthesis of 9H-xanthene or bisphenol derivatives has been developed by one-pot condensation of xylenols with aromatic aldehydes in the presence of p-toluenesulfonic acid (pTSA) as a catalyst under solvent-free conditions at 100°C.
23 citations
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TL;DR: In this paper, two series of new fluorescent polyimides (PIs) with different functional groups such as flexible ether linkages, substituted imidazole, photoactive xanthene pendant, and electron withdrawing CF3 groups were prepared using novel monomers and three commercially available dianhydrides.
23 citations
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TL;DR: In this article, the polarization dependence of the second harmonic signal from monolayers of xanthene dyes is used to develop a model for the orientation of the adsorbates and to locate the group responsible for adsorption.
23 citations