Results 61 to 70 of about 4,019 (241)
Chemistry – A European Journal, EarlyView.ABSTRACT Inorganic analogues of aromatic compounds, wherein C═C bonds are replaced with B─N bonds, are isoelectronic with the original aromatic compounds, however, they can show different properties. While borazine, an inorganic analogue of benzene, has been well‐studied, inorganic analogues of chalcogenophene have been less explored.
Yuki Shibutani +3 more
wiley +1 more source
Chemistry – A European Journal, EarlyView.A one‐shot Pd(II)‐catalyzed C─H activation strategy enables the rapid conversion of simple linear propiolamides into structurally diverse mono‐, di‐, and tri‐olefin‐bridged MPAEs. This cascade process orchestrates up to six sequential C–H activations in a single operation, providing streamlined access to highly conjugated architectures.
Haiyu Wang +4 more
wiley +1 more source
Chemistry – A European Journal, EarlyView.A comprehensive experimental and theoretical study is presented of a family of TADF dyes. Comparing the behavior of structurally related dyes, we uncover the subtle and somewhat unexpected role of conformational degrees of freedom associated with peripheral groups that affect the delicate interplay of excited states that governs spin–orbit coupling ...
Andrea Landi +7 more
wiley +1 more source
Polar Fluorenes and Spirobifluorenes: Fluorescence and Fluorescence Anisotropy Spectra [PDF]
, 2011 An extensive spectroscopic study is presented of two asymmetrically substituted fluorene dyes and of the related spiro dimers in both liquid and glassy solvents.
SISSA, Cristina +29 more
core +1 more source
Acta Crystallographica Section E Structure Reports Online, 2014 In the title molecule, C13H9NO, the fluorene system and the oxime group non-H atoms are essentially coplanar, with a maximum deviation from the fluorene mean plane of 0.079 (2) Å for the oxime O atom. A short intramolecular C—H...O generates anS(6) ring.
Bernhard Bugenhagen +3 more
openaire +3 more sources
Chemistry – A European Journal, EarlyView.We report a systematic study of β‐ketonitrile–modified Prodan‐type solvatochromic fluorophores. The β‐ketonitrile substitution induces marked bathochromic shifts in absorption and emission and significantly enhances fluorescence quantum yields in nonpolar solvents.
Hiroaki Asakawa +3 more
wiley +1 more source
We report an enantio- and diastereodivergent synthesis of enantioenriched fluorenes bearing bis-1,3-nonadjacent stereocenters with broad substrate scope and high enantioselectivity (up to 99% ee) under low catalyst loading (0.1 mol %).
Wengang Guo (3773317) +5 more
core +1 more source
Benzo[5]radialenes as precursors of fluorenes and benzo[b]fluorenes
, 2015 Neste trabalho demonstramos a preparação de fluorenos e benzo[b]fluorenos por uma nova rota sintética, baseada na reação de Diels-Alder de derivados benzo[5]radialênicos.
Von Richthofen, Andreas Albert
core +1 more source
Synthesis of Indeno[1,2-b]fluorenes and the Incorporation of BODIPY Fluorophores into Tetrakis(arylethnyl)benzenes [PDF]
, 2011 xx, 318 p. ： ill. (some col.)Highly conjugated, carbon rich molecules are of great interest due to their unique optoelectronic properties. These molecules are now recognized as suitable materials for advanced materials applications such as light-emitting
Chase, Daniel Tyler, 1983-
core +1 more source
The Expanding Role of Diazirines in Synthetic Methodology
European Journal of Organic Chemistry, EarlyView.Beyond their established role in photoaffinity labeling, diazirines have emerged as versatile reagents in synthetic chemistry. This review highlights their dual reactivity as carbene and nitrogen‐transfer precursors, showcasing mechanistic insights and diverse applications in cyclopropanations, cycloadditions, skeletal editing, amination, heterocycle ...
Viktor Savic +3 more
wiley +1 more source