Topic
Fluorenone
About: Fluorenone is a research topic. Over the lifetime, 1067 publications have been published within this topic receiving 17162 citations. The topic is also known as: Diphenylene ketone & 9-Oxofluorene.
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TL;DR: The trifluoromethylphenylene unit was introduced into the copolymer backbone and its content ratio was varied from 10 −mol% to 50 −mol%. In contrast to pure polyfluorene, the deep-blue fluorescence of these copolymers is quite stable and not contaminated by the well-known green emission associated with fluorenone defects.
9 citations
TL;DR: The mechanism of formation of these products is discussed in this paper, where the reaction using anthrone (11) as a carbonyl reagent yields only anthraquinone (12) and anthracene (13).
Abstract: Reaction of aromatic aldehydes, and phthalic and thiophthalic anhydrides, with diethyl sodiophosphonate (1) gives the trans-stilbenes (3), 3,3′-biphthalidylidene (30), and 3,3′-bis-(2-thiophthalidylidene)(33). Similar treatment of fluorenone (8) and xanthone (17) with (1) leads to 9,9′-bis(fluororenylidene)(9) and 9,10-dihydro-9-oxophenanthrene-10-spiro-9′-fluorene (10), and to 9,9′-bixanthenylidene (18) and 9,9′-bixanthenyl (19), respectively, but the reaction using anthrone (11) as a carbonyl reagent yields only anthraquinone (12) and anthracene (13). Similar treatment using N-methylisatoic anhydride (34) and N-methylisatin (36) produces NN′dimethylisoindigo (35). Reaction of benzaldehyde and p-chlorobenzaldehyde with diethyl 1-[(N-sodio)anilino]cyclohexylphosphonate (40) gives mainly corresponding mixtures of trans-(41a, b) and cis-stilbene epoxides (42a, b), while similar treatment of p-nitrobenzaldehyde with (40) produces 4,4′-dinitrostilbene (3e). Reaction of (8) with (40), as well as with (1), gives (9) and (10). The mechanism of formation of these products is discussed.
9 citations
TL;DR: The composition of ketones from the fraction of weakly polar compounds isolated from crude oils in Jurassic sediments south of the Western Siberian oil-and-gas province has been studied as mentioned in this paper.
Abstract: The composition of ketones from the fraction of weakly polar compounds isolated from crude oils in Jurassic sediments south of the Western Siberian oil-and-gas province has been studied. It has been found that aliphatic ketones are represented by the homological series of n-alkan-2-ones and the isoprenoid ketone 6,10,14-trimethylpentadecan-2-one. Among aromatic ketones, fluorenone, benzofluorenones, dibenzo- and/or naphthofluorenones, and their C1–C4 homologues have been identified.
9 citations
TL;DR: The first Pd-based heterogeneous homo-and cross-coupling reactions for the synthesis of fluorenones were reported in this article, where the palladium supported SBA-functionalizd 1,2-dicarboxylic acid (Pd@DCA-SBA) was prepared and characterized by the FT-IR, TGA, AAS, TEM, and EDS measurements.
9 citations
TL;DR: In this article, the 16 electron iPrPCPIr fragment (iPrPCP) was cyclometalized by biphenyl, phenanthrene, fluorenone, benzophenone, and 1-naphthol.
9 citations