Results 101 to 110 of about 18,845 (239)

Synthesis of pyrroles by nickel-catalysed arylative cyclisations of alkynamides [PDF]

, 2019
A nickel-based catalytic system for the anti-carbometallative cyclisations of alkynamides to arylboronic acids is described. The reactions proceed using catalytic nickel and (rac)-Ph-PHOX, to provide alkenylnickel species which can undergo reversible E/Z-
Chung, Chieh-Hsu
core  

N-Heterocyclic carbene–palladium catalysts for the direct arylation of pyrrole derivatives with aryl chlorides

Beilstein Journal of Organic Chemistry, 2013
New Pd–NHC complexes have been synthesized and employed for palladium-catalyzed direct arylation of pyrrole derivatives by using electron-deficient aryl chlorides as coupling partners.
Ismail Özdemir, Nevin Gürbüz, Nazan Kaloğlu, Öznur Doğan, Murat Kaloğlu, Christian Bruneau, Henri Doucet   +6 more
doaj   +1 more source

Synthesis and in vitro study of redox properties of pyrrole and halogenated pyrrole derivatives [PDF]

Journal of the Serbian Chemical Society
The redox balance plays a crucial role in maintaining biological processes under normal conditions. Antioxidants inhibit and reduce harmful oxidation processes, while pro-oxidants can act as anti-cancer agents by promoting ROS-mediated cell death.
Petković Miloš R., Kotur-Stevuljević Jelena M., Jovanović Predrag M., Jovanović Miloš D., Mitrović Nikola M., Simić Milena R., Tasić Gordana D., Savić Vladimir M.   +7 more
doaj   +1 more source

Synthesis and practical applications of 2-(2-nitroalkyl)pyrroles

, 2020
Functionalization of pyrroles introducing a 2-nitroalkyl moiety allows the formation of nitro-containing compounds to be used as pivotal intermediates for the synthesis of bioactive compounds.
Palmieri, A, Petrini, M
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

Rhodium-Catalyzed Transannulation of 1,2,3-Triazoles to Polysubstituted Pyrroles

, 2014
Rhodium-catalyzed transannulation of N-sulfonyl-1,2,3-triazoles with vinyl ether has been accomplished for the synthesis of various polysubstituted pyrroles.
Rajasekar, Shanmugam, Pazhamalai Anbarasan, Shanmugam Rajasekar, Anbarasan, Pazhamalai   +3 more
core   +1 more source

Preparation and functionalization of regioselectively substituted pyrroles/

, 1993
The reaction of 1-substituted vinamidinium salts with sarcosine ethyl ester produced 2,3-disubstituted pyrroles; a similar reaction with glycine ethyl ester gave 2,5-disubstituted pyrroles.
Smith, Lana L.
core  

Physical properties of alkyl pyrroles and their salts

, 1959
The structures of the ions formed by several alkyl pyrroles in hydrochloric acid are deduced from proton resonance spectra. Basicity values for three alkyl pyrroles are determined from ultraviolet spectra of their salts in buffer solutions. An attempt is
Bullock, E., S. S. Mitra, E. Bullock, R. J. Abraham, Abraham, R.J., Mitra, S.S.   +5 more
core   +1 more source

Bifunktionale Cosubstrate ermöglichen Threonin‐Dehydrogenase katalysierte chemoenzymatische Pyrrolsynthese

Angewandte Chemie, EarlyView.
Klassische Knorr‐Chemie trifft auf moderne Biokatalyse. Die Threonindehydrogenase erzeugt aus l‐Threonin Aminoaceton, welches direkt in einer chemoenzymatischen Knorr‐Pyrrolsynthese abgefangen wird. Ein bifunktionales β‐Dicarbonylsubstrat dient sowohl als Pyrrolbaustein als auch als Hydridakzeptor für integrierte NAD+‐Recyclierung und ermöglicht die ...
Valentina Jurkaš, Fabian M. Kulier, Jorge González‐Rodríguez, Carlotta Chiesa, Peter Both, Peter Šiška, Fabio Parmeggiani, Florian Rudroff, Margit Winkler   +8 more
wiley   +1 more source

Sulfur-Based Protecting Groups for Pyrroles and the Facile Deprotection of 2-(2,4-Dinitrobenzene)sulfinyl and Sulfonyl Pyrroles

, 2016
The effectiveness of simple sulfinyl and sulfonyl groups as electron-withdrawing protecting groups for pyrroles has been analyzed using 13C NMR spectroscopy and confirmed by consideration of X-ray crystal structures.
T. Stanley Cameron (1599820), R. Jonathan Butler (2684728), Katherine N. Robertson (841910), Andrea B. E. Laltoo (2684722), Meaghan N. Grundy (2684725), Alison Thompson (1639690)   +5 more
core   +2 more sources