Results 11 to 20 of about 32,802 (321)

Direct asymmetric N-propargylation of indoles and carbazoles catalyzed by lithium SPINOL phosphate

open access: yesNature Communications, 2020
Asymmetric functionalization of N–H bonds constitutes an important but less developed class of reactions. Here, the authors report the asymmetric direct N-propargylation of indoles and carbazoles with a lithium SPINOL phosphate as the chiral catalyst and
Yingcheng Wang   +3 more
doaj   +2 more sources

Catalyst-driven scaffold diversity : selective synthesis of spirocycles, carbazoles and quinolines from indolyl ynones [PDF]

open access: yesChemistry, 2016
Medicinally relevant spirocyclic indolenines, carbazoles and quinolines can each be directly synthesised selectively from common indolyl ynone starting materials by catalyst variation.
Aldeghi   +48 more
core   +2 more sources

Industrial source identification of polyhalogenated carbazoles and preliminary assessment of their global emissions

open access: yesNature Communications, 2023
Polyhalogenated carbazoles (PHCZs) are emerging global pollutants found in environmental matrices, e.g., 3000 tonnes of PHCZs have been detected in the sediments of the Great Lakes.
Yuxiang Sun   +9 more
semanticscholar   +1 more source

Site-Selective C-H Functionalization of Carbazoles.

open access: yesAngewandte Chemie, 2023
Carbazole alkaloids hold great potential in pharmaceutical and material sciences. However, the current approaches for C1 functionalization of carbazoles rely on the use of a pre-installed directing group, severely limiting their applicability and ...
Mazen Elsaid   +4 more
semanticscholar   +1 more source

Synthesis of indoles, indolines, and carbazoles via palladium-catalyzed C─H activation.

open access: yesGreen Synthesis and Catalysis, 2021
The construction of indole, indoline, and carbazole heterocycles has been of significant interest in the synthetic community over the last century due to their prevalence in natural products and other biologically active compounds.
Alexander J Rago, Guangbin Dong
semanticscholar   +1 more source

Effect of Substituents of Cerium Pyrazolates and Pyrrolates on Carbon Dioxide Activation

open access: yesMolecules, 2021
Homoleptic ceric pyrazolates (pz) Ce(RR’pz)4 (R = R’ = tBu; R = R’ = Ph; R = tBu, R’ = Me) were synthesized by the protonolysis reaction of Ce[N(SiHMe2)2]4 with the corresponding pyrazole derivative.
Uwe Bayer   +4 more
doaj   +1 more source

Simple carbazole derivatives with mono/dimethoxyphenylacrylonitrile substituents as hole‐transporting materials: Performance studies in hybrid perovskite solar cells

open access: yesElectrochemical Science Advances, 2021
Herein, we report the development of two new low‐cost 9‐(2‐ethylhexyl)‐9H‐carbazoles carrying the mono/dimethoxyphenyl substituted cyanovinylene units symmetrically at 3‐ and 6‐positions of the carbazole core (CZ1‐2), as potential hole‐transporting ...
Kavya S. Keremane   +1 more
doaj   +1 more source

4,7-Di(9H-carbazol-9-yl)-[1,2,5]oxadiazolo[3,4-d]pyridazine

open access: yesMolbank, 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

Carbazole Derivatives as STAT Inhibitors: An Overview

open access: yesApplied Sciences, 2021
The carbazole class is made up of heterocyclically structured compounds first isolated from coal tar. Their structural motif is preponderant in different synthetic materials and naturally occurring alkaloids extracted from the taxonomically related ...
Anna Caruso   +5 more
doaj   +1 more source

An Update of Carbazole Treatment Strategies for COVID-19 Infection

open access: yesApplied Sciences, 2023
The Coronavirus disease 2019 (COVID-19) outbreak was declared by the World Health Organization (WHO) in March 2020 to be a pandemic and many drugs used at the beginning proved useless in fighting the infection. Lately, there has been approval of some new
Maria Grazia Bonomo   +5 more
doaj   +1 more source

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