Results 161 to 170 of about 538,570 (408)

Tunable Preparation of β‐Substituted Alkenoate Esters via Radical Alkenylation of C(sp3)–H Bonds with Allenoates

Advanced Synthesis &Catalysis, EarlyView.
Abstract A photocatalytic strategy for the radical alkenylation of aliphatic C(sp3)–H bonds with 2,3‐allenoate esters is described. The protocol takes place upon irradiation of the reaction mixture in the presence of the decatungstate anion, which triggers C−H cleavage in the chosen aliphatic substrates.
Alexandra Jorea, Roberto Chessa, Davide Ravelli   +2 more
wiley   +1 more source

Efficient, One-Pot Synthesis of Tetrahydrobenzo[a]xanthen-11-ones and Dibenzo[a,j]xanthenes Using Trichloroacetic Acid as a Solid Heterogeneous Catalyst Under Solvent-Free Conditions

E-Journal of Chemistry, 2011
A simple and efficient method have been described for the synthesis of 12-aryl-8,9,10,12-tetrahydrobenzo[a]xanthen-11-one derivatives employing a one-pot, three-component reaction of aryl aldehydes, 2-naphthol and dimedone in the presence of ...
Zahed Karimi Jaber, S. Zoleykha Abbasi, Baharak Pooladian, Marziyeh Jokar   +3 more
doaj   +1 more source

Appendix—The synthesis of aryl glycosiduronic acids [PDF]

, 1958
C. A. Marsh, G. A. Levvy
openalex   +1 more source

Peripheral Arylation of Subporphyrazines

Chemistry – A European Journal, 2013
AbstractPeripherally hexaarylated subporphyrazines (SubPzs) have been prepared through a Pd‐catalyzed, CuTC‐mediated coupling of a hexaethylsulfanylated subporphyrazine with arylboronic acids. The introduced aryl substituents strongly influence the electronic properties of the subporphyrazine through effective conjugative interaction.
Tomás Torres, Tomás Torres, M. Salomé Rodríguez-Morgade, Tomohiro Higashino, Tomohiro Higashino, Atsuhiro Osuka   +5 more
openaire   +4 more sources

Efficient Synthesis of Amino Lactones via Copper‐catalysed Alkene Aminooxygenation

Advanced Synthesis &Catalysis, EarlyView.
Abstract The synthesis of 5–7 membered oxygenated heterocycles by intramolecular aminooxygenation of unsaturated alkenes using commercially available N‐fluorobenzenesulfonimide as amination reagent and TpiPr2Cu(NCCH3) as precatalyst is reported. With unsaturated aliphatic carboxylic acids, the corresponding lactones are obtained from moderate to almost
Martina Casciotti, José M. Muñoz‐Molina, Tomás R. Belderrain, Pedro J. Pérez   +3 more
wiley   +1 more source

Cesium Enhances Long-Term Stability of Lead Bromide Perovskite-Based Solar Cells [PDF]

arXiv, 2015
Direct comparison between perovskite-structured hybrid organic-inorganic - methyl ammonium lead bromide (MAPbBr3) and all-inorganic cesium lead bromide (CsPbBr3), allows identifying possible fundamental differences in their structural, thermal and electronic characteristics.
arxiv  

Synthesis of Novel Aryl(heteroaryl)sulfonyl Ureas of Possible Biological Interest

Molecules, 2010
The course of reaction of aryl and heteroaryl sulfonamides with diphenylcarbonate (DPC) and 4-dimethylaminopyridine (DMAP) was found to depend on the pKa of the sulfonamide used.
Maria Gdaniec, Jarosław Sączewski, Karolina Lisewska, Agnieszka Kiedrowska, Marta Łobocka, Monika Samsel, Anna Kuchnio, Franciszek Sączewski, Patrick J. Bednarski   +8 more
doaj   +1 more source

Über die quartären Ammoniumsalze aus Trimethylamin und Aryl‐sulfochloriden [PDF]

, 1913
D. Vorländer, Otto Nolte
openalex   +1 more source

Illuminating the Path of Rearrangement: Visible Light‐Driven Pd‐Catalyzed Substituted Olefins Synthesis

Advanced Synthesis &Catalysis, EarlyView.
Abstract Pd‐catalyzed reactions are among the most straightforward and efficient methods to proficiently build Csp2‐Csp2 bonds. Nevertheless, thermal activation remains mandatory in most cases, which may decrease the compatibility with sensitive functional groups.
Jenifer Sharshonov, Valentin Duchemann, Yuqian Sun, Christine Tran, Philippe Belmont, Abdallah Hamze, Diana Lamaa, Etienne Brachet   +7 more
wiley   +1 more source

Investigating charge transfer dynamics at the nanoscale [PDF]

arXiv, 2017
Acquiring quantitative information on charge transfer (CT) dynamics at the nanoscale remains an important scientific challenge. In particular, CT processes in single molecules at surfaces needs to be investigated to be properly controlled in various devices. To address this issue, the dynamics of switching molecules can be exploited.
arxiv