Search Results - "Altmann, Hagen J"

Journal Article

A Spirocyclic Parabanic Acid Masked N‐Heterocyclic Carbene as Thermally Latent Pre‐Catalyst for Polyamide 6 Synthesis and Epoxide Curing

by Altmann, Hagen J Frey, Wolfgang Buchmeiser, Michael R Published in Macromolecular rapid communications. (01.10.2020)

“...1,3‐Dicyclcohexyl‐6,9‐dimethyl‐1,3,6,9‐tetraazaspiro[4.4]non‐7‐ene‐2,4‐dione, a spirocyclic parabanic acid derivative of N,N‐dimethylimidazole, is used as...”

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Journal Article

Protected N-heterocyclic carbenes as latent organocatalysts for the low-temperature curing of anhydride-hardened epoxy resins

by Altmann, Hagen J Naumann, Stefan Buchmeiser, Michael R Published in European polymer journal (01.10.2017)

“...[Display omitted] •Fully latent epoxy resins based on CO2-protected N-heterocyclic carbenes are presented.•They show fast curing at low reaction temperature,...”

Journal Article

Grubbs-Hoveyda type catalysts bearing a dicationic N-heterocyclic carbene for biphasic olefin metathesis reactions in ionic liquids

by Koy, Maximilian Altmann, Hagen J Autenrieth, Benjamin Frey, Wolfgang Buchmeiser, Michael R Published in Beilstein journal of organic chemistry (2015-00-00)

“...The novel dicationic metathesis catalyst [(RuCl2(H2ITapMe2)(=CH-2-(2-PrO)-C6H4))(2+) (OTf(-))2] (Ru-2, H2ITapMe2 =...”

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Journal Article

Reversible N‐Heterocyclic Carbene‐Induced α‐H Abstraction in Tungsten(VI) Imido Dialkyl Dialkoxide Complexes

by Musso, Janis V Benedikter, Mathis J Wang, Dongren Frey, Wolfgang Altmann, Hagen J Buchmeiser, Michael R Published in Chemistry : a European journal (17.07.2020)

“...The first reversible N‐heterocyclic carbene (NHC) induced α‐H ion in tungsten(VI) imido‐dialkyl dialkoxide complexes is reported. Treatment of...”

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Journal Article

Latent and Air‐Stable Pre‐Catalysts for the Polymerization of Dicyclopentadiene: From Penta‐ to Hexacoordination in Molybdenum Imido Alkylidene N‐Heterocyclic Carbene Complexes...

by Elser, Iris Kordes, Benjamin R Frey, Wolfgang Herz, Katharina Schowner, Roman Stöhr, Laura Altmann, Hagen J Buchmeiser, Michael R Published in Chemistry : a European journal (27.08.2018)

“...The pentacoordinated, 16‐valence electron (VE) Mo imido alkylidene N‐heterocyclic carbene (NHC) complexes I1–I5 and the hexacoordinated 18‐VE Mo imido...”

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Journal Article

Synthesis of Linear Poly(oxazolidin-2-one)s by Cooperative Catalysis Based on N‑Heterocyclic Carbenes and Simple Lewis Acids

by Altmann, Hagen J Clauss, Manuel König, Simon Frick-Delaittre, Elena Koopmans, Carsten Wolf, Aurel Guertler, Christoph Naumann, Stefan Buchmeiser, Michael R Published in Macromolecules (22.01.2019)

“...The synthesis of isocyanurate-free, linear poly(oxazolidin-2-one)s starting from diepoxides and aromatic as well as aliphatic diisocyanates is reported...”

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Journal Article

Dual catalysis with an N‐heterocyclic carbene and a Lewis acid: Thermally latent precatalyst for the polymerization of ε‐caprolactam

by Altmann, Hagen J Steinmann, Mark Elser, Iris Benedikter, Mathis J Naumann, Stefan Buchmeiser, Michael R Published in Journal of polymer science (2020) (15.11.2020)

“...So far, the earlier reported strong correlation between basicity of an N‐heterocyclic carbene (NHC) and its reactivity in poly(ε‐caprolactam) (PA6) synthesis...”

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Journal Article

Synthesis of dihydroxy telechelic oligomers of β‐butyrolactone catalyzed by titanium(IV)‐alkoxides and their use as macrodiols in polyurethane chemistry

by Altmann, Hagen J Machat, Martin R Wolf, Aurel Gürtler, Christoph Wang, Dongren Buchmeiser, Michael R Published in Journal of polymer science (2020) (01.02.2021)

“...We report on a solvent‐free approach for the synthesis of low molecular weight, α,ω‐dihydroxy telechelic poly(β‐butyrolactone). In the presence of Ti(IV)...”

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Data Set

CCDC 1981738: Experimental Crystal Structure Determination

by Musso, Janis V Benedikter, Mathis J Wang, Dongren Frey, Wolfgang Altmann, Hagen J Buchmeiser, Michael R
2020

Data Set

CCDC 1981737: Experimental Crystal Structure Determination

by Musso, Janis V Benedikter, Mathis J Wang, Dongren Frey, Wolfgang Altmann, Hagen J Buchmeiser, Michael R
2020

Data Set

CCDC 1981739: Experimental Crystal Structure Determination

by Musso, Janis V Benedikter, Mathis J Wang, Dongren Frey, Wolfgang Altmann, Hagen J Buchmeiser, Michael R
2020

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