Results 261 to 270 of about 25,797 (319)
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Acta Crystallographica Section C Crystal Structure Communications, 1996
In fluorene-1-carboxylic acid, C14H10O2, the sole hydrogen bond is of the cyclic dimer type about a center of symmetry. The carboxyl H atom is ordered. Distances in the fluorene core are very similar to those in fluorene itself; the fluorene core dihedral angle is, however, larger than in fluorene.
A C, Blackburn, A J, Dobson, R E, Gerkin
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In fluorene-1-carboxylic acid, C14H10O2, the sole hydrogen bond is of the cyclic dimer type about a center of symmetry. The carboxyl H atom is ordered. Distances in the fluorene core are very similar to those in fluorene itself; the fluorene core dihedral angle is, however, larger than in fluorene.
A C, Blackburn, A J, Dobson, R E, Gerkin
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Catalytic Asymmetric Synthesis of Chiral Fluorenes: Recent Developments and Future Perspectives
Annalen der PharmacieThe chiral fluorene fragment constitutes one of the most important scaffolds frequently found in numerous bioactive molecules, ligands, and advanced functional materials due to its unique physical properties.
Tianyuan Ou +5 more
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Angewandte Chemie, 2019
This work presents a general approach for synthesis of substituted [5]-helical dispiroindeno[2,1-c]fluorenes based on Rh-catalyzed intramolecular cyclotrimerization of triynes.
R. Kaiser +7 more
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This work presents a general approach for synthesis of substituted [5]-helical dispiroindeno[2,1-c]fluorenes based on Rh-catalyzed intramolecular cyclotrimerization of triynes.
R. Kaiser +7 more
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Dispiro(fluorene-9,4'-[1,3]dithiolane-5',9''-fluorene)
Acta Crystallographica Section C Crystal Structure Communications, 1995The crystal structure of dispiro(fluorene-9,4'-[1,3]dithiolane-5',9-fluorene), C 27 H 18 S 2 , is reported. The C4-C5 bond connecting the two fluorenyl groups is 1.580 (4) A which is slightly longer than the C-C bond lengths [1.36-1.49 A] in other 1,3-dithiolanes.
R. P. Leino +4 more
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Chemischer Informationsdienst. Organische Chemie, 1971
AbstractDie Metallierung des Cyclopentadithiophens (I) mit Äthyllithium/ Äther und anschließender Carboxylierung führt zur Carbonsäure (II) (Ausbeute 58%).
ALLERT K. WIERSEMA, SALO GRONOWITZ
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AbstractDie Metallierung des Cyclopentadithiophens (I) mit Äthyllithium/ Äther und anschließender Carboxylierung führt zur Carbonsäure (II) (Ausbeute 58%).
ALLERT K. WIERSEMA, SALO GRONOWITZ
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Direct access to benzo[b]fluorenes via a gold-catalysed A3-coupling strategy
Organic Chemistry Frontiers, 2019A one-pot combination of gold catalysis and thermal cyclization provides a fast convergent route to benzo[b]fluorenes.
D. Lustosa +6 more
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Organic Chemistry Frontiers, 2019
A new method for the synthesis of furan-/benzo-fused fluorenes through copper(i)-catalyzed coupling of conjugated enynones or α-diazocarbonyl compounds with dialkynylbenzenes has been developed.
He Zhang +4 more
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A new method for the synthesis of furan-/benzo-fused fluorenes through copper(i)-catalyzed coupling of conjugated enynones or α-diazocarbonyl compounds with dialkynylbenzenes has been developed.
He Zhang +4 more
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Vapor pressure measurements on fluorene and methyl-fluorenes
Fluid Phase Equilibria, 2004Vapor pressures, molar enthalpies of sublimation, and molar enthalpies of vaporization of fluorene, 9-methyl-fluorene, and 1-methyl-fluorene have been determined by the transpiration method. Results were tested for internal consistency and compared with available literature data.
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Anisotropic electron mobility in fluorene-PPV and fluorene-MEH-PPV
Molecular Physics, 2016ABSTRACTPolyfluorene copolymers are attractive semiconductor materials, in particular for applications in the organic electronics field. They are versatile to be chemically modified and allow a tuning of the emission to cover the entire visible spectrum.
Carlos E. T. Magalhães +3 more
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Novel Soluble Fluorene–Thienothiadiazole and Fluorene–Carbazole Copolymers for Optoelectronics
Macromolecular Symposia, 2010AbstractSummary: Optical, photophysical, electrochemical and photoelectrical properties of novel soluble low‐bandgap fluorene – thienothiadiazole based copolymers (CHTF and CDTF) and luminescent fluorene – carbazole copolymers, (CFCzE and CFCZA) were studied.
Věra Cimrová +2 more
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