Results 31 to 40 of about 5,238 (190)

Straightforward Synthesis of Dihydrobenzo[a]fluorenes through Au(I)-Catalyzed Formal [3 + 3] Cycloadditions [PDF]

open access: yes, 2012
Dihydrobenzo[a]fluorene derivatives have been prepared by a formal intramolecular [3 + 3] cycloaddition of o-alkynylstyrenes bearing a secondary alkyl group at the β-position of the styrene moiety.
Fernández Rodríguez, Manuel A.   +4 more
core   +1 more source

Transient-axial-chirality controlled asymmetric rhodium-carbene C(sp2)-H functionalization for the synthesis of chiral fluorenes

open access: yesNature Communications, 2020
The formation of chiral molecules generally relies on direct chirality transfer from catalyst to products. Here, the authors report a strategy based on point chirality transfer from the catalyst to a dirhodium carbene intermediate with axial chirality ...
Kuiyong Dong   +8 more
doaj   +1 more source

Synthesis and properties of novel star-shaped oligofluorene conjugated systems with BODIPY cores [PDF]

open access: yes, 2014
Star-shaped conjugated systems with varying oligofluorene arm length and substitution patterns of the central BODIPY core have been synthesised, leading to two families of compounds, T-B1-T-B4 and Y-B1-Y-B4, with T- and Y-shaped motifs, respectively ...
Amarasinghe, Dimali   +11 more
core   +3 more sources

Inorganic–organic nanocomposites of CdSe nanocrystals surface-modified with oligo- and poly(fluorene) moieties [PDF]

open access: yes, 2011
We report a facile grafting-from strategy towards the synthesis of inorganic–organic composites of semiconductor nanocrystals and wide-bandgap polymers.
Adamczyk, Sylwia   +12 more
core   +1 more source

Synthesis of 5-(2-methoxy-1-naphthyl)- and 5-[2-(methoxymethyl)-1-naphthyl]-11H-benzo[b]fluorene as 2,2'-disubstituted 1,1'-binaphthyls via benzannulated enyne–allenes

open access: yesBeilstein Journal of Organic Chemistry, 2011
5-(2-Methoxy-1-naphthyl)- and 5-[2-(methoxymethyl)-1-naphthyl]-11H-benzo[b]fluorene were synthesized by treatment of the corresponding benzannulated enediynes with potassium tert-butoxide in refluxing toluene to give benzannulated enyne–allenes for the ...
Yu-Hsuan Wang   +3 more
doaj   +1 more source

Recent Advances in Homogeneous Metal-Catalyzed Aerobic C–H Oxidation of Benzylic Compounds [PDF]

open access: yes, 2018
Csp(3)-H oxidation of benzylic methylene compounds is an established strategy for the synthesis of aromatic ketones, esters, and amides. The need for more sustainable oxidizers has encouraged researchers to explore the use of molecular oxygen.
Domínguez Pérez, Pilar Esther   +3 more
core   +3 more sources

Liquid dosage forms with antibacterial activity

open access: yesAktualʹnì Pitannâ Farmacevtičnoï ì Medičnoï Nauki ta Praktiki, 2015
The development and implementation of effective liquid medicines with antiseptic action on the basis of new substances and their complex combinations into medical practice is an important task of modern pharmaceutical and medical science.
O. I. Mykhalyk
doaj   +1 more source

Determination of polynuclear aromatic compounds in composted municipal refuse and compost-amended soils by a simple clean-up procedure [PDF]

open access: yes, 2012
3 pages, 1 figure, 2 tables, 21 references.A rapid and reproducible procedure suitable for the analysis of polycyclic aromatic compounds (PACs) in sludges and soil samples has been developed.
Boettcher, L.   +3 more
core   +1 more source

Bioactive fluorenes. Part III: 2,7-dichloro-9H-fluorene-based thiazolidinone and azetidinone analogues as anticancer and antimicrobial against multidrug resistant strains agents

open access: yesBMC Chemistry, 2020
Background Thiazoles, thiazolidinones and azetidinones are highly ranked amongst natural and synthetic heterocyclic derivatives due to their great pharmaceutical potential.
Essam M. Hussein   +9 more
doaj   +1 more source

Self-trapping and excited state absorption in fluorene homo-polymer and copolymers with benzothiadiazole and tri-phenylamine [PDF]

open access: yes, 2016
We thank the EPSRC [EP/J009318/1 and EP/J009016/1] for funding. MJP thanks the European Research Council (ERC) for funding under the European Union’s Seventh Framework Programme (FP7/2007-2013)/ERC Grant No.
Denis, Jean-Christophe   +7 more
core   +1 more source

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