Results 141 to 150 of about 26,493 (337)

The Stronger the Better: Donor Substituents Push Catalytic Activity of Molecular Chromium Olefin Polymerization Catalysts. [PDF]

Chemistry, 2021
Hansen HB, Wadepohl H, Enders M.
europepmc   +1 more source

Arene Incorporation and Ring Expansion in the Thermal Decomposition of a Divanadium(III) Complex With Four Bridging Methyl Groups

Chemistry – A European Journal, EarlyView.
Thermolysis of [{VCp*(µ‐CH3)2}2] (Cp* = η5‐C5Me5) in hexane leads to a tetranuclear cube‐type methylidene complex [{VCp*(µ3‐CH2)}4], while in benzenic solvents C6H5R produces the formal insertion of a CH fragment into the six‐membered aromatic ring of a solvent molecule to give trovacene derivatives with η7‐cycloheptatrienyl ligands [VCp*(η7‐C7H6R ...
Adrián Calvo‐Molina, Rodrigo González‐Prieto, Jesús Jover, Adrián Pérez‐Redondo, José Luis Priego, Carlos Yélamos   +5 more
wiley   +1 more source

Ancillary ligand effects on α-olefin polymerization catalyzed by zirconium metallocene: a computational study. [PDF]

RSC Adv, 2022
Zhao Y, Xu X, Wang Y, Liu T, Li H, Zhang Y, Wang L, Wang X, Zhao S, Luo Y.   +9 more
europepmc   +1 more source

Synthesis of neutral nickel catalysts for ethylene polymerization – the influence of ligand size on catalyst stability [PDF]

, 2003
A facile synthesis of nickel salicylaldimine complexes with labile dissociating ligands is described. In addition to producing highly active ethylene polymerization catalysts, important insights into the effect of ligand size on catalyst stability and ...
Connor, Eric F., Grubbs, Robert H., Henderson, Jason I., Waltman, Andrew W., Younkin, Todd R.   +4 more
core   +1 more source

Pharmaceuticals Made with Hydrogen: A Sustainable and Efficient Approach Using Flow Synthesis

Chemistry – A European Journal, EarlyView.
We demonstrate a sustainable strategy for pharmaceutical manufacturing by combining hydrogen, heterogeneous catalysis, and continuous flow synthesis. The development of novel catalysts and their application in a multi‐step synthesis of donepezil enabled a highly productive process with no intermediate purification.
Shū Kobayashi, Haruro Ishitani
wiley   +1 more source

Special Issue on Recent Advances in Coordination Polymerization of Olefins. Interaction between Cationic Zirconium Alkyl Complexes and Fluorine-Substituted BPh4 Anions in Ion-Pair Metallocene Catalyst Systems.

, 1994
Seiji MAEHAMA, Akihiro Yano, Satoru Yamada, Akira Akimoto   +3 more
openalex   +2 more sources

Formation of Nanotubular Methylaluminoxanes and the Nature of the Active Species in Single‐Site α‐Olefin Polymerization Catalysis [PDF]

, 2008
Mikko Linnolahti, John R. Severn, Tapani A. Pakkanen   +2 more
openalex   +1 more source

Titelbild: Sulfur‐Free Radical RAFT Polymerization of Methacrylates in Homogeneous Solution: Design of exo‐Olefin Chain‐Transfer Agents (R−CH₂C(=CH₂)Z) (Angew. Chem. 52/2022) [PDF]

, 2022
Maki Amano, Mineto Uchiyama, Kotaro Satoh, Masami Kamigaito   +3 more
openalex   +1 more source

Self‐assembly and Lateral Cobalt Coordination of a Fivefold Symmetric Cyanostar Macrocycle on an Au(111) Surface

Chemistry – A European Journal, EarlyView.
Herein, we report the first example of the formation of a close‐packed, regular 2D monolayer of a fivefold symmetric cyanostar macrocycle on an Au(111) surface under ultra‐high vacuum and the structural modification of such self‐assembled architecture upon cobalt atom deposition.
Lenka Černá, Miguel Martínez García, Shanmugasibi K. Mathialagan, Sofía O. Parreiras, Koen Lauwaet, José Ignacio Urgel, Aurelio Gallardo, Amar H. Flood, Tomás Torres, José M. Gallego, Giovanni Bottari, David Écija   +11 more
wiley   +1 more source

Synthesis of Block Copolymers Utilizing Alkoxycarbonylation or Aminocarbonylation of Growing Chain End in Pd‐Catalyzed Living Polymerization of Olefins

Macromolecular Materials and Engineering
Diimine Pd catalysts have been known to promote the living polymerization of olefins. Treatment of the living polyolefin with carbon monoxide followed by the addition of alcohols or amines results in alkoxycarbonylation or aminocarbonylation of the ...
Daisuke Takeuchi, Kohsuke Ohta, Yuta Kimura   +2 more
doaj   +1 more source