Results 21 to 30 of about 36,459 (348)
Synthesis of Carbazoles and Related Heterocycles from Sulfilimines by Intramolecular C−H Aminations
Angewandte Chemie, 2020 While direct nitrene insertions into C−H bonds have become an important tool for building C−N bonds in modern organic chemistry, the generation of nitrene intermediates always requires transition metals, high temperatures, ultraviolet or laser light.
semanticscholar +1 more source
Molecules, 2022 The development of a Lewis acid-catalyzed, intramolecular ring-opening benzannulation of 5-(indolyl)2,3-dihydrofuran acetals is described. The resulting 1-hydroxycarbazole-2-carboxylates are formed in up to 90% yield in 1 h.
Shaoren Yuan +4 more
doaj +1 more source
Applications of Quantum Computing for Investigations of Electronic Transitions in Phenylsulfonyl-carbazole TADF Emitters [PDF]
npj Computational Materials 7, 70 (2021), 2020 A quantum chemistry study of the first singlet (S1) and triplet (T1) excited states of phenylsulfonyl-carbazole compounds, proposed as useful thermally activated delayed fluorescence (TADF) emitters for organic light emitting diode (OLED) applications, was performed with the quantum Equation-Of-Motion Variational Quantum Eigensolver (qEOM-VQE) and ...
arxiv +1 more source
Alternative products to carbazoles in the oxidation of diphenylamines with palladium (II) acetate [PDF]
, 1997 Although simple diphenylamines are conveniently oxidised with Palladium (II) acetate to give carbazoles, for more complex examples, carbazoles are minor products amongst many.CRUP (Portugal). British Council - Treaty of Windsor Programme.
Campos, Ana M. F. Oliveira +2 more
core +1 more source
Electrochemical Synthesis of Carbazoles by Dehydrogenative Coupling Reaction
Chemistry, 2020 A constant current protocol, employing undivided cells, a remarkably low supporting electrolyte concentration, inexpensive electrode materials, and a straightforward precursor synthesis enabling a novel access to N‐protected carbazoles by anodic N,C bond
A. Kehl +4 more
semanticscholar +1 more source
Chemistry Proceedings, 2022 The reductive cyclization of different organic nitro compounds by carbon monoxide, catalyzed by transition metal complexes, is a very efficient and clean strategy for the synthesis of many N-heterocycles.
Fabio Ragaini +2 more
doaj +1 more source
Impact of TCO Microstructure on the Electronic Properties of Carbazole-based Self-Assembled Monolayers [PDF]
, 2023 Carbazole-based self-assembled monolayers (PACz-SAMs), anchored via their phosphonic acid group on a transparent conductive oxide (TCO) have demonstrated excellent performance as hole-selective layers in inverted perovskite solar cells. However, the influence of the TCO microstructure on the work function (WF) shift after SAM anchoring as well as the ...
arxiv +1 more source
Brønsted Acid-Catalyzed Straightforward Synthesis of Benzo[b]carbazoles from 2,3-Unsubstituted Indoles [PDF]
, 2014 Described is a general and efficient synthesis of valuable benzo[b]carbazoles by Brønsted acid-catalyzed reactions between simple C-2,C-3-unsubstituted indoles and ortho-[α-(hydroxy)benzyl]benzaldehyde acetals.
Appukkuttan +48 more
core +1 more source
Straight access to highly fluorescent angular indolocarbazoles via merging Au- and Mo-catalysis [PDF]
, 2020 A straightforward and efficient synthesis of the two less explored types of indolocarbazoles has been developed. Two different processes for the carbazole nucleus preparation, a gold-catalysed regioselective cyclization followed by the dioxomolybdenum ...
Martínez Lara, Fernando +4 more
core +1 more source
4,7-Di(9H-carbazol-9-yl)-[1,2,5]oxadiazolo[3,4-d]pyridazine
Molbank, 2022 Donor–acceptor–donor (D–A–D)-type molecules are considered as a promising class of NIR fluorescence materials. In this communication, 4,7-di(9H-carbazol-9-yl)-[1,2,5]oxadiazolo[3,4-d]pyridazine was obtained by dehydrogenation of 4,7-bis(1,2,3,4,4a,9a ...
Timofey N. Chmovzh +3 more
doaj +1 more source