Results 81 to 90 of about 35,646 (266)

(2‐Phosphinophenyl)aluminum Dichloride Complexes as Intramolecular Al/P Frustrated Lewis Pairs for Ketone, Ester, and Imine Activation

Chemistry – A European Journal, EarlyView.
Three 2‐phosphinophenylaluminum dichloride complexes were synthesized and characterized as novel intramolecular FLPs. These FLP systems exhibit high Lewis acidity and effectively activate challenging substrates including aliphatic ketones, imines, and esters. DFT analysis revealed that strain release and Al–P dynamics govern their reactivity. Abstract (
Yoshihiro Nishimoto, Hirotaka Okamoto, Makoto Yasuda   +2 more
wiley   +1 more source

Synthesis of quaternary aryl phosphonium salts: photoredox-mediated phosphine arylation [PDF]

, 2016
We report a synthesis method for the construction of quaternary aryl phoshonium salts at ambient temperature. The regiospecific reaction invovles the coupling of phosphines with aryl radicals derived from diaryliodonium salts under photoredox ...
A. F. Fearnley, Bayne, Bayne, Bentrude, Cano-yelo, Cano-yelo, Caputo, Cassity, Coa, Dunn, Enders, Fañanás-Mastral, Fumagalli, Gerritsma, He, He, Heng, Hoffman, Horner, Hounjet, Hwang, J. An, Kalyani, Kampmeier, Liu, M. Jackson, Malmgren, Manabe, Marcoux, Marcoux, McNulty, McNulty, McNulty, McNulty, McNulty, McNulty, Merritt, Merzougui, Muneer, Neufeldt, P. Lindovska, Perez, Prier, Ptitsyna, Pérez, Pérez, R. M. Denton, Redmund, Reichl, Rideout, Rideout, Shirakawa, Shirakawa, Smith, Sundalam, Tappe, Tobisu, Tucker, vom Stein, Wang, Werner, Xi, Xiong, Xu, Yusubov, Zhdankin, Zhu   +66 more
core   +2 more sources

phosphonium compounds

, 2014
Citation: 'phosphonium compounds' in the IUPAC Compendium of Chemical Terminology, 3rd ed.; International Union of Pure and Applied Chemistry; 2006. Online version 3.0.1, 2019. 10.1351/goldbook.P04562 • License: The IUPAC Gold Book is licensed under Creative Commons Attribution-ShareAlike CC BY-SA 4.0 International for individual terms.
openaire   +1 more source

Synthesis and Isolation of Bismuth Scorpionate Complexes: Toward Bond Activation via Bismuth‐Ligand Cooperation

Chemistry – A European Journal, EarlyView.
ABSTRACT Over the past twenty years, main group chemistry has significantly expanded its scope to include reactivities once considered the exclusive domain of transition metals. Among the emerging concepts, element‐ligand cooperation has proven to be a powerful strategy for enabling bond activation reactions but remains relatively unexplored for ...
Lennart Hensle, Viktoria H. Gessner
wiley   +1 more source

Rigid Ligand Environments at Beryllium, From Spectroscopic Probes to Small Molecule Activation

European Journal of Inorganic Chemistry, EarlyView.
Due to the high rigidity and definition of beryllium scorpionate complexes, they can be used to study metal‐pseudohalide and ‐carbon bonds in detail. Furthermore, these compounds can be used to activate small molecules and exhibit unprecedented transmetalation reactions. In beryllium scorpionate complexes, three of the four available coordination sites
Magnus R. Buchner, Chantsalmaa Berthold
wiley   +1 more source

Silicon containing electroconductive polymers and structures made therefrom [PDF]

, 1991
An electropolymerized film comprised of polymers and copolymers of a monomer is formed on the surface of an anode. The finished structures have superior electrical and mechanical properties for use in applications such as electrostatic dissipation and ...
Distefano, Salvador, Liang, Ranty H., Nagasubramanian, Ganesan   +2 more
core   +1 more source

Energetics and Mechanism of Drug Transport Mediated by the Lactococcal Multidrug Transporter LmrP [PDF]

, 1996
The gene encoding the secondary multidrug transporter LmrP of Lactococcus lactis was heterologously expressed in Escherichia coli. The energetics and mechanism of drug extrusion mediated by LmrP were studied in membrane vesicles of E. coli. LmrP-mediated
Bolhuis, Henk,, Brands, Jan Roel,, Driessen, Arnold J.M.,, Konings, Wil N.,, Poolman, Bert,, Putman, Monique,, Veen, Hendrik W. van,   +6 more
core   +1 more source

phosphonium ylides

, 2014
Citation: 'phosphonium ylides' in the IUPAC Compendium of Chemical Terminology, 3rd ed.; International Union of Pure and Applied Chemistry; 2006. Online version 3.0.1, 2019. 10.1351/goldbook.P04563 • License: The IUPAC Gold Book is licensed under Creative Commons Attribution-ShareAlike CC BY-SA 4.0 International for individual terms.
openaire   +1 more source

Sulfonium‐Based Antimicrobial Block Copolymers: Influence of Hydrophobicity on Biological Activity and Antibiotic Synergy

Macromolecular Rapid Communications, EarlyView.
Sulfonium‐based antimicrobial block copolymers combine an active cationic hydrophobic block with a neutral hydrophilic block to improve cytocompatibility. The hydrophobicity of the sulfonium‐based block controls the activity against S. aureus and E coli.
Sidra Kanwal, Otto Staudhammer, Umer Bin Abdul Aziz, Elisa Quaas, Jörg Rademann, Daniel Klinger   +5 more
wiley   +1 more source

An XPS study of the thermal degradation of polystyrene-clay nanocomposites [PDF]

, 2002
X-ray photoelectron spectroscopy, XPS, has been used to examine several polystyrene-clay nanocomposites. The accumulation of oxygen, from the almuniosilicate, on the surface of the polymer was observed, along with the loss of carbon.
Du, Jianxin, Wang, Jianqi, Wilkie, Charles A., Zhu, Jin   +3 more
core   +1 more source