Results 11 to 20 of about 11,071 (289)

Synthesis of Some Thienopyrimidine Derivatives

Molecules, 2006
Thioxothienopyrimidinones, alkylthio- and arylalkylthiothienopyrimidinones, thienopyrimidinones, thienopyrimidines a thienopyrimidinedione and a thienotriazolo- pyrimidinone were prepared from 2-amino-3-carboethoxy-4,5-disubstituted thiophenes and 2 ...
Hassan M. Al-Hazimi, Hanan A. S. Al-Blowy, Fatma E. M. El-Baih   +2 more
doaj   +1 more source

Synthesis and Anti‐Inflammatory Activity of 2‐Amino‐4,5,6,7‐tetrahydrobenzo[b]thiophene‐Derived NRF2 Activators

ChemistryOpen, 2022
This is the first study investigating the nuclear factor (erythroid‐derived 2)‐like 2 (NRF2) activity of compounds containing a new scaffold, tetrahydrobenzo[b]thiophene.
Kit‐Kay Mak, Zhang Shiming, Dr. Ola Epemolu, Prof. Dr. Albena T. Dinkova‐Kostova, Dr. Geoffrey Wells, Dr. Irina G. Gazaryan, Dr. Raghavendra Sakirolla, Prof. Dr. Zulkefeli Mohd, Prof. Dr. Mallikarjuna Rao Pichika   +8 more
doaj   +1 more source

New complexes [CpFe(dppe)thiophenes]PF6 [PDF]

, 1996
The reactions of CpFe(dppe)I with thiophenes in the presence of T1PF6 afforded the new complexes [CpFe(dppe)thiophenes]PF6 (thiophenes = thiophene, 2-methyl-thiophene, 3-methyl-thiophene, 2,5-dimethyl-thiophene, benzothiophene and dibenzothiophene). They
Diaz, Eloisa, Leal, Gabriel
core   +1 more source

Palladium-catalyzed 2,5-diheteroarylation of 2,5-dibromothiophene derivatives

Beilstein Journal of Organic Chemistry, 2014
Conditions allowing the one pot 2,5-diheteroarylation of 2,5-dibromothiophene derivatives in the presence of palladium catalysts are reported.
Fatma Belkessam, Aidene Mohand, Jean-François Soulé, Abdelhamid Elias, Henri Doucet   +4 more
doaj   +1 more source

Flavouring Group Evaluation 76 Revision 2 (FGE.76Rev2): Consideration of sulfur‐containing heterocyclic compounds, evaluated by JECFA, structurally related to thiazoles, thiophenes, thiazoline and thienyl derivatives from chemical group 29 and miscellaneous substances from chemical group 30 evaluated by EFSA in FGE.21Rev5

EFSA Journal, 2023
The Panel on Food Additives and Flavourings (FAF) was requested to consider the JECFA evaluations of 28 flavouring substances in the Flavouring Group Evaluation 76 (FGE.76Rev2). Twenty‐one of these substances have been considered in FGE.76Rev1.
EFSA Panel on Food Additives and Flavourings (FAF), Maged Younes, Gabriele Aquilina, Laurence Castle, Gisela Degen, Karl‐Heinz Engel, Paul J Fowler, Maria Jose Frutos Fernandez, Peter Fürst, Ursula Gundert‐Remy, Rainer Gürtler, Trine Husøy, Melania Manco, Peter Moldeus, Sabina Passamonti, Romina Shah, Ine Waalkens‐Berendsen, Matthew Wright, Romualdo Benigni, Claudia Bolognesi, Kevin Chipman, Eugenia Cordelli, Karin Nørby, Camilla Svendsen, Maria Carfí, Giorgia Vianello, Wim Mennes   +26 more
doaj   +1 more source

Palladium-Catalyzed Direct (Het)arylation Reactions of Benzo[1,2-d:4,5-d′]bis([1,2,3]thiadiazole and 4,8-Dibromobenzo[1,2-d:4,5-d′]bis([1,2,3]thiadiazole)

Molecules, 2023
Palladium-catalyzed direct (het)arylation reactions of strongly electron-withdrawing tricyclic benzo[1,2-d:4,5-d′]bis([1,2,3]thiadiazole) and its 4,8-dibromo derivative were studied; the conditions for the selective formation of mono- and bis-aryl ...
Timofey N. Chmovzh, Timofey A. Kudryashev, Daria A. Alekhina, Oleg A. Rakitin   +3 more
doaj   +1 more source

Inhibition of human cytochromes P450 2A6 and 2A13 by flavonoids, acetylenic thiophenes and sesquiterpene lactones from Pluchea indica and Vernonia cinerea

Journal of Enzyme Inhibition and Medicinal Chemistry, 2017
The human liver cytochrome P450 (CYP) 2A6 and the respiratory CYP2A13 enzymes play role in nicotine metabolism and activation of tobacco-specific nitrosamine carcinogens.
Supattra Boonruang, Khanistha Prakobsri, Phisit Pouyfung, Ekaruth Srisook, Aruna Prasopthum, Pornpimol Rongnoparut, Songklod Sarapusit   +6 more
doaj   +1 more source

ON THE PREPARATION OF THIOPHENE. [PDF]

Journal of the American Chemical Society, 1890
n ...
openaire   +2 more sources

Novel thiophenes and method for polymerization of said thiophenes [PDF]

, 2002
The invention relates to novel thiophenes of formula (I) wherein R and R' are independently - hydrogen, alkyl or alkoxy or together a -O-(CH2)n-O bridge wherein n = 1 to 5.
Meijer, EW Bert, Vekemans, J.A.J.M., Groenendaal, L Bert, Vekemans, JAJM Jef = Jozef, Meijer, E.W., Mullekom, HAM Robert van, Mullekom, van, H.A.M., Groenendaal, L.   +7 more
core   +1 more source

Application of Flow Thermolysis in Organic Synthesis: Easy Access to α,ω-Bis Thienyl- and Bis Pyrrolyl- Alkanes from Methylene Derivatives of Meldrum's Acid

Molecules, 2000
Thermal decomposition of Meldrum's acid derivatives and rearrangement of (alkylsulfanyl) or (propargylamino)methylene ketene intermediates leads in one step to bis thienyl- or bis pyrrolyl-alkanes.
Hamid Dhimane, Fanck Jourdain, Jean Claude Pommelet   +2 more
doaj   +1 more source