Chain Walking in the AlCl3 Catalyzed Cationic Polymerization of α-Olefins.
Sign Up to like & getrecommendations! Published in 2022 at "ChemPlusChem"
DOI: 10.1002/cplu.202200432
Abstract: Continuing efforts aimed at performing the 1-decene polymerization to low viscosity polyalphaolefins (PAO)s using a less hazardous AlCl3 catalyst than boron-based analogs, the basic mechanisms of this system were revealed in this research. In this… read more here.
Keywords: walking alcl3; chain; pao; chain walking ... See more keywords
Nondissociative chain walking as a strategy in catalytic organic synthesis
Sign Up to like & getrecommendations! Published in 2019 at "Tetrahedron Letters"
DOI: 10.1016/j.tetlet.2019.07.029
Abstract: Abstract “Nondissociative” chain walking is a mechanism where an alkylmetal species undergoes rapid β-hydride elimination and reinsertion to move the metal center along the alkyl chain without dissociating an alkene intermediate during the migration process.… read more here.
Keywords: chain; catalytic organic; chain walking; organic synthesis ... See more keywords
Chain-Walking Polymerization of α-Olefins by α-Diimine Ni(II) Complexes: Effect of Reducing the Steric Hindrance of Ortho- and Para-Aryl Substituents on the Catalytic Behavior, Monomer Enchainment, and Polymer Properties
Sign Up to like & getrecommendations! Published in 2018 at "Macromolecules"
DOI: 10.1021/acs.macromol.7b02242
Abstract: With Brookhart type α-diimine Ni(II) based catalysts, it is highly challenging to tune polymers branching level and branch-type distribution, which in turn strongly affects thermal and mechanical properties, through the aryl ortho-positions modification, while maintaining… read more here.
Keywords: ortho para; chain walking; polymerization;
Topology Analysis of Chain Walking Polymerized Polyethylene: An Alternative Approach for the Branching Characterization by Thermal FFF
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DOI: 10.1021/acs.macromol.9b01410
Abstract: Thermal field-flow fractionation (ThFFF) was designed to investigate the retention behavior of a series of dendritic polyethylenes synthesized using a chain walking catalyst (cwPE) with variations ... read more here.
Keywords: topology; chain walking; walking polymerized; topology analysis ... See more keywords
Amide-Directed Rhodium-Catalyzed Chain-Walking Hydrothiolation of Internal Alkenes.
Sign Up to like & getrecommendations! Published in 2024 at "Organic letters"
DOI: 10.1021/acs.orglett.4c00804
Abstract: We developed a rhodium-catalyzed chain-walking hydrothiolation process for internal alkenes, which offers a novel and efficient alternative for C(sp3)-H bond cleavage, while focusing on thiol incorporation. This method exclusively affords N,S-acetals at 36-90% yields. Regioconvergent… read more here.
Keywords: catalyzed chain; internal alkenes; rhodium catalyzed; walking hydrothiolation ... See more keywords
Chain Walking as a Strategy for Iridium-Catalyzed Migratory Amidation of Alkenyl Alcohols to Access α-Amino Ketones.
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DOI: 10.1021/jacs.2c00948
Abstract: Catalytic carbon-nitrogen bond formation in hydrocarbons is an appealing synthetic tool to access valuable nitrogen-containing compounds. Although a number of synthetic approaches have been developed to construct a bifunctional α-amino carbonyl scaffold in this realm,… read more here.
Keywords: amidation; chain walking; alkenyl alcohols; amino ... See more keywords
Remote Catalytic C(sp3)-H Alkylation via Relayed Carbenoid Transfer upon Olefin Chain Walking.
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DOI: 10.1021/jacs.4c11014
Abstract: Transition metal carbenes have emerged as versatile intermediates for various types of alkylations. While reactions of metal carbene species with alkenes have been extensively studied, most examples focus on cyclopropanation and allylic C-H insertion. Herein,… read more here.
Keywords: alkylation; chain walking; olefin chain; remote catalytic ... See more keywords