Results 91 to 100 of about 17,027 (206)

Regioselective Synthesis of 3-Substituted Pyrroles by Nucleophilic Addition of 3-(1-Arylsulfonylalkyl) Pyrroles Activated under Basic or Acid Conditions [PDF]

, 2011
Sulfonyl pyrroles, obtained regioselectively from commercial N-triisopropylsilylpyrrole, undergo removal of the arylsulfonyl group under basic or acidic conditions to give vinylogous imino-like derivatives (see scheme; TIPS=triisopropylsilyl).
MARTINELLI, FABIO, Fabio Martinelli, Alessandro Palmieri, PETRINI, Marino, Marino Petrini, PALMIERI, Alessandro   +5 more
core   +1 more source

Facile Synthesis of N-Aryl Pyrroles via Cu(II)-Mediated Cross Coupling of Electron Deficient Pyrroles and Arylboronic Acids [PDF]

, 2016
N-Arylation of electron-deficient pyrroles has been achieved by cross-coupling with arylboronic acids at room temperature in the presence of stoichiometric amounts of copper(II) acetate. The generality of this reaction has been established with variously
Jayaram K. Srirangam (2998734), James Saenz (1656892), Shu Yu (645086)   +2 more
core   +1 more source

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

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 [PDF]

, 2016
Rhodium-catalyzed transannulation of N-sulfonyl-1,2,3-triazoles with vinyl ether has been accomplished for the synthesis of various polysubstituted pyrroles.
Pazhamalai Anbarasan (1555108), Shanmugam Rajasekar (1754086)   +1 more
core   +1 more source

Synthesis of N-(o-amino aryl) pyrroles by Paal-Knorr reaction [PDF]

, 1971
N-(o-nitro aryl)- and N-(o-acetamino aryl)-2, 5-dimethyl pyrroles are synthesized by Paal-Knorr reaction by condensing acetonyl acetone with o-nitro anilines and o-acetamino anilines respectively.
Subba Rao, N. V., Sudarsana Rao, K., Ratnam, C. V.   +2 more
core   +1 more source

Controlled oxidation of pyrroles: synthesis of highly functionalized γ-lactams [PDF]

, 2013
The oxidation of pyrroles usually leads to uncontrolled polymerization and decomposition. To overcome this problem, the controlled oxidation of substituted pyrroles with Dess-Martin periodinane is reported.
Jason Smith (14749684), Howard, JK (15544202), Hyland, CJT (15535802), Just, J (15544205)   +3 more
core  

Substituent effect on the electronic and optical properties of newly designed pyrrole derivatives using density functional theory

Open Physics
This work explores six newly designed compounds obtained by several substitutions in 2,5-di(2-thienyl) pyrrole molecule. For this series of compounds, the electronic and optical properties were investigated using density functional theory and time ...
Aljaafreh Mamduh J., Hussein Rageh. K.
doaj   +1 more source

Nouvelle synthèse de pyrroles par cycloaddition [3+2] intramoléculaire [PDF]

, 2004
La cycloaddition dipolaire-1,3 est devenue un outil synthétique puissant permettant la synthèse d'hétérocycles azotés à cinq chaînons. Dans ce travail nous avons mis au point une nouvelle synthèse de pyrroles par cycloaddition.
BASHIARDES, Georges, SAFIR, Imad, BARBOT, Francis   +2 more
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