Results 21 to 30 of about 24,929 (273)

Synthesis of Tunable Fluorescent Imidazole-Fused Heterocycle Dimers [PDF]

open access: yes, 2022
A short, concise, and one-pot synthesis of imidazo-fused heterocycle dimers with tunable fluorescent properties has been developed. By the first time use of glyoxal dimethyl acetal in the Groebke-Blackburn-Bienaymé (GBB) three-component reaction (3CR ...
Xin Li   +8 more
core   +2 more sources

Inhibition studies of Brucella suis β-carbonic anhydrases with a series of 4-substituted pyridine-3-sulphonamides

open access: yesJournal of Enzyme Inhibition and Medicinal Chemistry, 2018
The two β-carbonic anhydrases (CAs, EC 4.2.1.1) from the pathogenic bacterium Brucella suis, BsuCA1 and BsuCA2, were investigated for their inhibition profile with a series of pyridine-3-sulphonamide derivatives incorporating 4-hetaryl moieties.
Simona Maria Monti   +5 more
doaj   +1 more source

4-Chloro-6-ethoxy-2-(methylthio)pyrimidine

open access: yesMolbank, 2016
4,6-Dichloro-2-(methylthio)pyrimidine (3) reacts with EtONa in EtOH, at ca. 20 °C, for 2 h, to give exclusively 4-chloro-6-ethoxy-2-(methylthio)pyrimidine (5) in 89% yield. The latter is presented as a useful multifunctionalised pyrimidine scaffold.
Andreas S. Kalogirou   +1 more
doaj   +1 more source

Aminoazole-Based Diversity-Oriented Synthesis of Heterocycles

open access: yesFrontiers in Chemistry, 2018
The comprehensive review contains the analysis of literature data concerning reactions of heterocyclization of aminoazoles and demonstrates the application of these types of transformations in diversity-oriented synthesis.
Maryna V. Murlykina   +7 more
doaj   +1 more source

N‐Heterocyclic Carbenes [PDF]

open access: yesEuropean Journal of Inorganic Chemistry, 2009
The N-heterocyclic carbenes (NHC) now hold a preferred-ligand status in organic and organometallic chemistry. Their role in catalysis continues to grow. When the editorial staff at the Beilstein Journal of Organic Chemistry contacted me to act as a guest editor for the thematic series “N-Heterocyclic carbenes”, I was more than happy to accept what ...
openaire   +3 more sources

Evolution of N-Heterocycle-substituted Iodoarenes (NHIAs) to efficient Organocatalysts in Iodine(I/III)-mediated Oxidative Transformations

open access: yes, 2019
We herein describe the development of N-heterocycle-stabilized iodoarenes (NHAIs) as oxidation catalysts for oxidative C-X-bond forming reactions.
Andreas, Boelke   +3 more
core   +1 more source

Transformation of (allo)securinine to (allo)norsecurinine via a molecular editing strategy

open access: yesFrontiers in Chemistry
Securinega alkaloids have intrigued chemists since the isolation of securinine in 1956. This family of natural products comprises a securinane subfamily with a piperidine substructure and norsecurinane alkaloids featuring a pyrrolidine core.
Seoyoung Kim, Hee-Seung Lee, Sunkyu Han
doaj   +1 more source

Low-Cost Carbazole-Based Hole-Transporting Materials for Perovskite Solar Cells: Influence of S,N-Heterocycle

open access: yes, 2018
Diphenylamine-substituted carbazole (DPACZ) compounds are one of the most interesting hole-transporting materials (HTMs) for perovskite solar cells (PSCs).
Liyuan Liu (145516)   +6 more
core   +1 more source

Aromatic functionalization and heterocycle synthesis via aniline N-oxides

open access: yes, 2020
Chain, William J.This dissertation focuses on the development of new methodologies for aromatic functionalization and heterocycle synthesis via the excision of the N–O bond in aniline N-oxides.
Reed, Hayley
core   +1 more source

A review: Biologically active 3,4-heterocycle-fused coumarins

open access: yes, 2021
© 2020 Elsevier Masson SASThe combination of heterocycles offers a new opportunity to create novel multicyclic compounds having improved biological activity.
Youseftabar-Miri, Leila   +8 more
core   +1 more source

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