Journal ArticleDOI
Ceric-sulfate-catalyzed synthesis of 14-aryl-or 14-alkyl-14H-dibenzo[aj]xanthene under conventional heating and microwave irradiation
TLDR
In this article, a simple and facile procedure for the synthesis of 14-aryl or 14-alkyl-14H-dibenzo[aj]xanthenes is described.Abstract:
A simple and facile procedure for the synthesis of 14-aryl- or 14-alkyl-14H-dibenzo[aj]xanthenes is described. The procedure takes place by the one-pot condensation of 2-naphthol with aldehydes in the presence of anhydrous ceric sulfate as the catalyst under solvent-free conventional heating and microwave irradiation.Key words: xanthene, one-pot condensation, aldehyde, 2-naphthol, ceric sulfate, solvent-free, microwave irradiation.read more
Citations
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Chromium(III) Terephthalate Metal Organic Framework (MIL-101): HF-Free Synthesis, Structure, Polyoxometalate Composites, and Catalytic Properties
TL;DR: In this paper, mixed materials of the metal-organic framework (MOF), chromium(III) terephthalate (MIL-101), and phosphotungstic acid (PTA) were synthesized in aqueous media in the absence of hydrofluoric acid XRD analysis indicates the presence of ordered PTA assemblies residing in both the large cages and small pores of MIL-101, which suggests the formation of previously undocumented structures.
Journal ArticleDOI
Synthesis, antimicrobial and antioxidant evaluation of quinolines and bis(indolyl)methanes.
TL;DR: An improved and practical synthesis of substituted quinolines and bis(indolyl)methanes was achieved under microwave condition using Zn(OTf)(2) as catalyst.
Journal ArticleDOI
Synthesis of highly functionalized oxazines by Vilsmeier cyclization of amidoalkyl naphthols
TL;DR: In this paper, a mechanism involving sequential haloformylation and intramolecular nucleophilic cyclization is proposed for the one-step synthesis of oxazine derivatives.
Journal ArticleDOI
Acid-catalyzed ring opening in 2-(2-hydroxynaphthalene-1-yl)-pyrrolidine-1-carboxamides: formation of dibenzoxanthenes, diarylmethanes, and calixarenes
TL;DR: In this article, the ring opening of 2-(2-hydroxynaphthalene-1-yl)pyrrolidine-1 carboxamides with polyatomic phenols at the same conditions was found leading to diarylmethane derivatives and calix[4]resorcinols with naphthyl fragment acting as a leaving group.
Journal ArticleDOI
Fluoroboric Acid Adsorbed on Silica-Gel–Catalyzed Synthesis of 14-Aryl-14H-dibenzo[a,j]xanthene Derivatives
TL;DR: In this article, a simple and efficient procedure was developed for the preparation of 14-aryl-14H-dibenzo[a,j]xanthene derivatives using fluoroboric acid adsorbed on silica gel as a heterogeneous catalyst.
References
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Journal ArticleDOI
Xanthene-dye-labelled phosphatidylethanolamines as probes of interfacial pH. Studies in phospholipid vesicles
C G Knight,T Stephens +1 more
TL;DR: Three lipophilic pH indicators made by covalently binding the xanthene dyes fluoresce in, eosin or dichlorofluorescein to the amino group of phosphatidylethanolamine were incorporated into phospholipid vesicles and the effect of pH on the fluorescence was characterized and it was concluded that these probes were promising candidates for the measurement of pH values at cell surfaces.
Journal ArticleDOI
Convenient synthesis of 12H-benzo[a]xanthenes from 2-tetralone
Amitabh Jha,Jennifer Beal +1 more
TL;DR: In this paper, a 12H-benzo[a]xanthenes from 2-tetralone and 2-hydroxyaromatic aldehydes is described.
Journal ArticleDOI
A new synthesis of acetamido phenols promoted by Ce(SO4)2
TL;DR: In this article, a new method for the synthesis of acetamido phenols by a one-pot, three-component Ritter type reaction in moderate to good yields is described.
Journal ArticleDOI
Synthesis and anti-microbial activity of pyrazolylbisindoles--promising anti-fungal compounds.
Ganesabaskaran Sivaprasad,Paramasivan T. Perumal,Vaiyapuri R. Prabavathy,Narayanasamy Mathivanan +3 more
TL;DR: A series of pyrazolylbisindole derivatives have been synthesized by reacting substituted pyrazole aldehydes with substituted indoles using phosphotungstic acid, a Keggin type heteropoly acid as catalyst exhibiting excellent anti-fungal activity.
Journal ArticleDOI
New total synthesis of bikaverin
TL;DR: In this article, a six-step route involving selective dealkylation of bikaverin-dimethylether 6 was used for the synthesis of BIKAVERIN.