Results 11 to 20 of about 14,349 (246)

Thiophene-Based Covalent Organic Frameworks: Synthesis, Photophysics and Light-Driven Applications

Molecules, 2021
Porous crystalline materials, such as covalent organic frameworks (COFs), have emerged as some of the most important materials over the last two decades due to their excellent physicochemical properties such as their large surface area and permanent ...
Rubén Caballero, Boiko Cohen, Mario Gutiérrez   +2 more
doaj   +1 more source

An Active Catalyst System Based on Pd (0) and a Phosphine-Based Bulky Ligand for the Synthesis of Thiophene-Containing Conjugated Polymers

Frontiers in Chemistry, 2021
To address the limitations of conventional Pd catalysts in the polymerization of thiophene-containing conjugated polymers, an active catalyst system based on Pd (0) and a phosphine-based bulky ligand, L1, is explored systematically in Suzuki–Miyaura ...
Meifang Liu, Li Liu, Zhihui Zhang, Meixiu Wan, Huanmei Guo, Dan Li   +5 more
doaj   +1 more source

Copper-promoted hydration and annulation of 2-fluorophenylacetylene derivatives: from alkynes to benzo[b]furans and benzo[b]thiophenes

Beilstein Journal of Organic Chemistry, 2014
An efficient copper-promoted hydration reaction and its application in the synthesis of benzo[b]furan and benzo[b]thiophene derivatives is presented starting from readily available 2-fluorophenylacetylene derivatives. The key annulation step involves the
Yibiao Li, Liang Cheng, Xiaohang Liu, Bin Li, Ning Sun   +4 more
doaj   +1 more source

SYNTHESIS AND CHARACTERIZATION OF SUBSTITUTED GROUP CONTROLLED PYRENE DERIVATIVES WITH RADICAL CATIONS [PDF]

Química Nova
Two novel alkyl thiophene-modified pyrene derivatives (1)-(2) were created and synthesized using palladium-catalyzed Stille coupling processes and Friedel-Crafts reaction of pyrene.
Shunjie Li, Jian Chen
doaj   +1 more source

Investigation of physical and chemical properties of new derivatives of 5-(thiophene-3-ylmethyl)-4R-1,2,4-triazole-3-thiols

Aktualʹnì Pitannâ Farmacevtičnoï ì Medičnoï Nauki ta Praktiki, 2021
Heterocyclic compounds are one of the most important branches of modern organic chemistry and are widely used in medicine, pharmacy, agriculture, and in the production of new materials.
A. V. Khilkovets
doaj   +1 more source

Linear and nonlinear luminescence properties of thiophene based materials [PDF]

Journal of the Serbian Chemical Society, 2005
Three new thiophene based organic luminescence compounds, i.e., 2,5-bis(4’-N,N-dimethylaminostyryl) thiophene (BMST), 2,5-bis(4’-N,N-diethylaminostyryl)thiophene (BEST) and 2,5-bis(4’-N-cyclobutylaminostyryl)thiophene (BBST), were synthesized.
PING LU, GUANG MING XIA
doaj   +3 more sources

Scientific Opinion on Flavouring Group Evaluation 21, Revision 2 (FGE.21Rev2): Thiazoles, thiophene, thiazoline and thienyl derivatives from chemical group 29. Miscellaneous substances from chemical group 30

EFSA Journal, 2011
The Panel on Food Contact Materials, Enzymes, Flavourings and Processing Aids of the European Food Safety Authority was requested to evaluate 56 flavouring substances in the Flavouring Group Evaluation 21, Revision 2, using the Procedure in Commission ...
EFSA Panel on Food Contact Materials, Enzymes, Flavourings and Processing Aids (CEF)
doaj   +1 more source

A simple and easy to perform synthetic route to functionalized thienyl bicyclo[3.2.1]octadienes

Beilstein Journal of Organic Chemistry, 2020
In order to prepare novel polycyclic derivatives of bicyclo[3.2.1]octadiene systems fused with a thiophene ring, photochemical cyclization and aldol condensation reactions were carried out.
Dragana Vuk, Irena Škorić, Valentina Milašinović, Krešimir Molčanov, Željko Marinić   +4 more
doaj   +1 more source

New Approaches for the Synthesis of Heterocyclic Compounds Derived from Cyclohexan-1,3-dione with Anti-proliferative Activities

Acta Chimica Slovenica, 2021
In the present work a series of heterocyclization reactions were adopted using cyclohexan-1,3-dione through its reaction with either furan-2-carbaldehyde or thiophene-2-carbaldehyde to give the corresponding ylidene derivatives 3a,b. The latter compounds
Rafat Milad Mohareb, Yara Raafat Milad, Ayat Ali Masoud   +2 more
doaj   +1 more source

4,4″-Dichloro-4′-(2-thienyl)-2,2′:6′,2″-terpyridine

Molbank, 2019
A new thiophene-substituted terpyridine derivative has been prepared and characterized. This ligand features a thiophene heterocycle (as an electrochemically polymerizable unit) as well as two chlorine atoms for further functionalization.
Jérôme Husson, Laurent Guyard
doaj   +1 more source