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 stereochemical isomers of the 1,2-adducts of xanthene to carbonyl groups were isolated as the reaction products CIDNP technique was applied for the examination of the course of the reactions.
Abstract: Photochemical reduction of 2,3-dihydro-2-methyl-2,3-methano-1,4-naphthoquinone (1a) and 2,3-dihydro-2,3-dimethyl-2,3-methano-1,4-naphthoquinone (1b) with xanthene was investigated 6,7,8,9-Tetrahydrobenzocycloheptene-5,9-dione derivatives and stereochemical isomers of the so-called “1,2-adducts” of xanthene to carbonyl groups were isolated as the reaction products CIDNP technique was applied for the examination of the course of the reactions
2 citations
TL;DR: The redox behavior as determined by cyclic voltammetry reveals, in contrast to most (por)Fe(NO) compounds, a fast NO dissociation after electrooxidation in CH2Cl2 to result in a net chemically-irreversible oxidation at Epa=+0.77V vs Ag/AgCl.
2 citations
Patent•
13 Feb 1979
TL;DR: In this paper, Xanthene or thioxanthene compounds expressed by formula I: [R is H, (substituted) alkyl, alkenyl, or pheryl, etc.].
Abstract: PURPOSE:Xanthene or thioxanthene compounds expressed by formula I: [R is H, (substituted) alkyl, alkenyl, or (substituted) pheryl, etc.; X is oxygen or sulfur atom; A is (substituted)benzene ring; -SO2Z is bonded to the benzene or naphthalene ring; Z is (alkyl) amino, (substituted) anilino, or (substituted) phenoxy group, etc.].
2 citations
TL;DR: In this paper, the reaction of xanthene derivatives with indoles and pyrrole catalyzed by CAN in methanol through S N 1 reaction of -pyrillium with a nucleophilic reagent afforded the corresponding -indole-and pyrdrug-substituted xanthen derivatives in high yields, respectively.
Abstract: The reaction of xanthene derivatives with indoles and pyrrole catalyzed by CAN in methanol through S N 1 reaction of -pyrillium with a nucleophilic reagent afforded the corresponding -indole- and pyrrole-substituted xanthene derivatives in high yields, respectively.
2 citations
TL;DR: In this paper, a series of chloroquinoline-xanthene hybrids were prepared by one-pot multicomponent cyclo-condensation reaction of 2,7-dihydroxynaphthalene, aromatic aldehydes, and cyclic 1,3-dicarbonyl compounds.
Abstract: A novel series of chloroquinoline-xanthene hybrids were prepared by one-pot multicomponent cyclo-condensation reaction of 2,7-dihydroxynaphthalene, aromatic aldehydes, and cyclic 1,3-dicarbonyl compounds followed by condensation reaction with 4,7-dichloroquinoline. The synthesized compounds were characterized by various spectroscopic techniques and single crystal X-ray analysis.
2 citations