Vinyl ethers and epoxides photoinduced copolymerization with perfluoropolyalkylether monomers
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DOI: 10.1007/s00396-020-04723-3
Abstract: New perfluoropolyalkylether (PFPAE) monomers, chain extended with different alkyl groups and functionalized with vinyl ether or epoxide end-groups, were employed, together with trimethylolpropane trivinyl ether or trimethylolpropane triglycidyl ether, to produce fluorinated copolymers. The photoinduced… read more here.
Keywords: copolymerization perfluoropolyalkylether; epoxides photoinduced; ethers epoxides; vinyl ethers ... See more keywords
Synthesis and structures of α-lithiated vinyl ethers
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DOI: 10.1016/j.tet.2018.07.019
Abstract: Abstract The structures of α-lithiated vinyl ethers were explored on the basis of a combined computational and NMR study. Calculations (M06/6-31 + G(d)) on free energies of aggregate formation for a series of α-lithiated vinyl ethers indicated… read more here.
Keywords: lithiated vinyl; structures lithiated; synthesis structures; vinyl ethers ... See more keywords
Mechanistic Insight into the Stereoselective Cationic Polymerization of Vinyl Ethers.
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DOI: 10.1021/jacs.0c08254
Abstract: The control of the tacticity of synthetic polymers enables the realization of emergent physical properties from readily available starting materials. While stereodefined polymers derived from nonpolar vinyl monomers can be efficiently prepared using early transition… read more here.
Keywords: cationic polymerization; polymerization; stereoselective cationic; polymerization vinyl ... See more keywords
Ir-Catalyzed Atroposelective Desymmetrization of Heterobiaryls: Hydroarylation of Vinyl Ethers and Bicycloalkenes.
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DOI: 10.1021/jacs.9b12858
Abstract: A highly regio, diastereo- and enantioselective, scalable Ir-catalyzed hydroarylation of electron rich acyclic and tensioned cyclic olefins with heterobiaryls is described. The reaction of acyclic vinyl ethers, dihydrofuran and norbornenes with a variety of aryl… read more here.
Keywords: hydroarylation; atroposelective desymmetrization; vinyl ethers; desymmetrization heterobiaryls ... See more keywords
The influence of the substituents of oxiranes on copolymerization with vinyl ethers via concurrent cationic vinyl-addition and ring-opening mechanisms
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DOI: 10.1039/c7py01292f
Abstract: 2,2-Disubstituted oxiranes with electron-withdrawing substituents were copolymerized with vinyl ethers (VEs) via concurrent cationic vinyl-addition and ring-opening mechanisms, leading to a design strategy for copolymerization via crossover reactions with high efficiency. β-Methylglycidyl ether (βMGE) and… read more here.
Keywords: addition; concurrent cationic; vinyl; vinyl ethers ... See more keywords
Hydrophilic bio-based polymers by radical copolymerization of cyclic vinyl ethers derived from glycerol.
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DOI: 10.1039/d2cc02651a
Abstract: In this study, novel functional polymers were obtained by using glycerol as a bio-based precursor, which is abundant and inexpensive renewable feedstock with a polyol skeleton. Cyclic vinyl ethers with acetal linkage were derived from… read more here.
Keywords: derived glycerol; vinyl; vinyl ethers; cyclic vinyl ... See more keywords
Study of the Pauson–Khand reaction in flow over alkynylphenyl vinyl ethers: towards the synthesis of tricyclic multisubstituted benzofurans
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DOI: 10.1039/d2ra01062c
Abstract: The use of flow methodology allows the use of alkynylphenyl vinyl ethers (benzo-fused 1,7 enynes) as substrates for the intramolecular Pauson–Khand reaction (PKr). Forced temperature and pressure conditions during a short reaction time minimize the… read more here.
Keywords: pauson khand; vinyl ethers; reaction; khand reaction ... See more keywords
Vinylation of Carbonyl Oxygen in 4-Hydroxycoumarin: Synthesis of Heteroarylated Vinyl Ethers
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DOI: 10.1055/s-0037-1610696
Abstract: The unique nucleophilic character of the carbonyl oxygen of 4-hydroxy coumarin has been observed by the BF3·OEt2 catalyzed reaction of 4-hydroxycoumarin and alkynes. The reactions of 4-hydroxycoumarin and substituted 4-hydroxycoumarin with various terminal alkynes have… read more here.
Keywords: synthesis heteroarylated; carbonyl oxygen; synthesis; heteroarylated vinyl ... See more keywords