Current Standing on Radical Ring-Opening Polymerisations of Cyclic Ketene Acetals as Homopolymers and Copolymers with one Another.
Sign Up to like & getrecommendations! Published in 2023 at "Macromolecular rapid communications"
DOI: 10.1002/marc.202200941
Abstract: Radical Ring-opening polymerisation (RROP) of cyclic ketene acetals (CKAs) emerges to be a valuable polymerisation technique. In attracting more attention, RROP has seen a new spike in publications, which we will put into perspective. This… read more here.
Keywords: homopolymers copolymers; cyclic ketene; radical ring; ketene acetals ... See more keywords
α-Functionalized ketene N,S-acetals as two-carbon synthons in the reaction with 1,2-naphthoquinone 1-methide. Synthesis of 3-amino-1H-benzo[f]chromenes
Sign Up to like & getrecommendations! Published in 2020 at "Chemistry of Heterocyclic Compounds"
DOI: 10.1007/s10593-020-02694-5
Abstract: A series of 3-amino-1H-benzo[f]chromenes were obtained in the reaction of 1-[(dimethylamino)methyl]naphthalen-2-ol with push-pull ketene N,S-acetals containing an electron-withdrawing group in the α-position. It is assumed that the reaction proceeds as a [4+2] cycloaddition of ketene… read more here.
Keywords: amino benzo; functionalized ketene; benzo chromenes; ketene acetals ... See more keywords
Iridium-Catalyzed Amidation of In Situ Prepared Silyl Ketene Acetals to Access α-Amino Esters.
Sign Up to like & getrecommendations! Published in 2022 at "Organic letters"
DOI: 10.1021/acs.orglett.1c04376
Abstract: Disclosed herein is a convenient Ir-catalyzed amidation of esters to access α-amido esters. Initially prepared silyl ketene acetals are directly employed, without separate purification, for subsequent amidation with an oxycarbonylnitrenoid precursor using the Cp*(LX)Ir(III) catalyst.… read more here.
Keywords: catalyzed amidation; silyl ketene; ketene acetals; access ... See more keywords
Copper(II)-Catalyzed C-H Nitrogenation/Annulation Cascade of Ketene N,S-Acetals with Aryldiazonium Salts: A Direct Access to N2-Substituted Triazole and Triazine Derivatives.
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DOI: 10.1021/acs.orglett.9b04335
Abstract: Direct synthesis of N2-substituted triazole and triazine derivatives has been a challenge in N-heterocyclic chemistry. Under copper(II) catalysis ketene N,S-acetals, that is, alkylthio-substituted enaminones, efficiently reacted with aryldiazonium salts to allow the regioselective generation of… read more here.
Keywords: aryldiazonium salts; triazole triazine; substituted triazole; triazine derivatives ... See more keywords
Dithiocarbamate-mediated controlled copolymerization of ethylene with cyclic ketene acetals towards polyethylene-based degradable copolymers
Sign Up to like & getrecommendations! Published in 2021 at "Polymer Chemistry"
DOI: 10.1039/d0py00200c
Abstract: In this article, degradable polyethylene (PE)-based copolymers containing ester units in the backbone were prepared through the hybrid copolymerization of ethylene and cyclic ketene acetals (CKAs) mediated by dithiocarbamate successfully. read more here.
Keywords: copolymerization ethylene; polyethylene based; ethylene cyclic; ketene acetals ... See more keywords