Results 61 to 70 of about 22,861 (258)

Aryl-, Akynyl-, and Alkenylbenziodoxoles: Synthesis and Synthetic Applications

Molecules, 2023
Hypervalent iodine reagents are in high current demand due to their exceptional reactivity in oxidative transformations, as well as in diverse umpolung functionalization reactions.
Irina A. Mironova, Dmitrii M. Noskov, Akira Yoshimura, Mekhman S. Yusubov, Viktor V. Zhdankin   +4 more
doaj   +1 more source

Selective S-arylation of Sulfenamides with Arynes: Facile Access to Sul-filimines [PDF]

, 2023
Sulfilimines, the aza-analogues of sulfoxides, are of increasing interests in medicinal and agrochemical research programs. However, the development of efficient routes for their synthesis remains relatively unexplored.
Ningning, Li, Zhuang, Zhe, Hiroto, Yoshida, Quanyu, Ma, Jiajing, Tan, Xiaoying, Feng, Yifeng, Guo, Chaochao, Jin   +7 more
core   +1 more source

Synthesis of Large‐ and Medium‐Sized Heterobiaryl Atropisomeric Rings and Atropopeptides by Catalytic Intramolecular SNAr

Angewandte Chemie, EarlyView.
Catalytic, intramolecular N‐heterocycle arylation by nucleophilic aromatic substitution (SNAr) is now available for synthesis of highly strained macrocycles and medium‐sized heterobiaryl atropisomeric rings, including atropopeptides. Key to the approach is the ability to generate a strong base catalytically, taking advantage of base‐embedding ...
Alireza Abbasi Kejani, Paritosh Dey, Nicholas H. Stillman, Daniel M. Andrade, Michal Šimek, Martin Dračínský, Daniel Bím, Paulo H. S. Paioti   +7 more
wiley   +2 more sources

Direct catalytic arylation of heteroarenes with meso-bromophenyl-substituted porphyrins

Beilstein Journal of Organic Chemistry, 2017
The arylation of mono-, di- and tetra-meso-bromophenyl-substituted porphyrins with the heteroarenes containing “acidic” C–H bonds, such as benzoxazole, benzothiazole and N-methylimidazole was studied in the presence of three alternative catalytic systems:
Alexei N. Kiselev, Olga K. Grigorova, Alexei D. Averin, Sergei A. Syrbu, Oskar I. Koifman, Irina P. Beletskaya   +5 more
doaj   +1 more source

General and mild Ni0-catalyzed α-arylation of ketones using aryl chlorides [PDF]

, 2015
The authors thank the ERC (Advanced Researcher award-FUNCAT), 7th Framework Program NMP2-LA-2010-246461 (SYNFLOW), the EPSRC and King Saud University for funding.A general methodology for the α-arylation of ketones using a nickel catalyst has been ...
Slawin, Alexandra MZ, Slawin, Alexandra Martha Zoya, Nolan, Steven Patrick, Cordes, David B, Fernandez-Salas, Jose A, Fernandez Salas, Jose Antonio, Cordes, David Bradford, Nolan, Steven, Marelli, Enrico   +8 more
core   +1 more source

Birch reductive arylation by mechanochemical anionic activation of polycyclic aromatic compounds

Nature Communications
Birch reduction is a well-known process for transforming aromatic compounds. The reduction of aromatic rings using alkali metals produces anionic species that react with protons or electrophiles.
Yoshifumi Toyama, Akiko Yagi, Kenichiro Itami, Hideto Ito   +3 more
doaj   +1 more source

Direct C–H Alpha Arylation of Enones with ArI(O2CR)2 Reagents [PDF]

, 2019
Herein, we report the metal-free direct C–H arylation of enones mediated by hypervalent iodine reagents. The reaction proceeds via a reductive iodonium Claisen rearrangement of in situ b-pyridinium silyl enol ethers.
Felipe Cesar Sousa e Silva (7520025), Sarah, Wengryniuk, Nguyen T, Van, Sarah Wengryniuk (7287326), Nguyen T Van (7520028), Felipe Cesar, Sousa e Silva   +5 more
core   +2 more sources

The arylation of 2-pyrones and related heterocycles [PDF]

, 2018
2-Pyrones, and related heterocycles such as 2-pyridones, 2-coumarins and 2- quinolones, are useful model substrates to test a novel methodology due to their varied chemical properties.
Prendergast, Aisling M.
core   +1 more source

Palladium-catalyzed dual C–H or N–H functionalization of unfunctionalized indole derivatives with alkenes and arenes

Beilstein Journal of Organic Chemistry, 2012
This review highlights the development of palladium-catalyzed C–H and N–H functionalization reactions involving indole derivatives. These procedures require unactivated starting materials and are respectful of the basic principle of sustainable chemistry
Gianluigi Broggini, Egle M. Beccalli, Andrea Fasana, Silvia Gazzola   +3 more
doaj   +1 more source

Recent progress in metal assisted multicomponent reactions in organic synthesis

Frontiers in Chemistry, 2023
To prepare complicated organic molecules, straightforward, sustainable, and clean methodologies are urgently required. Thus, researchers are attempting to develop imaginative approaches.
Kokila Sakthivel, R. J. Gana, Toshitaka Shoji, Naoko Takenaga, Toshifumi Dohi, Fateh V. Singh   +5 more
doaj   +1 more source