Výsledky vyhledávání - "Frank Däbritz"

Synthesis and characterization of two classes of hyperstar polymers bearing hyperbranched cores grafted with linear arms

Autor: Brigitte Voit, Hartmut Komber, Frank Däbritz, Albena Lederer

Publikováno v: Journal of Polymer Science Part A: Polymer Chemistry. 50:1979-1990

New hyperstar polymers (HSP) consisting of two different hyperbranched (hb) aromatic/aliphatic cores grafted with linear polymer arms were successfully synthesized. The hb cores were based on either hb poly(vinylbenzylchloride) synthesized by SCVP-AT

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::5985ad6ff6cbb3a26a25aab523d1352c
https://doi.org/10.1002/pola.25972

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Hyperstar poly(ester-methacrylate)s as additives in thermally and photocured epoxy resins

Autor: Frank Däbritz, Marco Sangermano, Brigitte Voit, Mohamed Naguib

Publikováno v: Polymer. 52:5723-5731

New hyperstar polymers (HSP) based on a hyperbranched polyester core (HBP-OH) and PMMA or P(MMA-b-HEMA) block copolymer arms have been prepared for use as nanoscale soft particle-like additives in an epoxy matrix cured cationically either by UV light

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::96ad3226970e5788886a75a520631399
https://doi.org/10.1016/j.polymer.2011.10.023

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Diblock Copolymer Formation via Self-Assembly of Cyclodextrin and Adamantyl End-Functionalized Polymers

Autor: Michael Erber, Helmut Ritter, Jan Stadermann, Brigitte Voit, Frank Däbritz, Hartmut Komber

Publikováno v: Macromolecules. 44:3250-3259

Two water-soluble polymers poly(2-methyl-2-oxazoline) and poly(N-isopropylacrylamide) with complexing moieties (β-CD and adamantane, respectively) located at the chain ends were prepared via controlled techniques. To verify the interaction of the β

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::fc10d3a4033799299a8e8bb39f5ff049
https://doi.org/10.1021/ma200048a

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Synthesis and Hormonal Activity of the (25S)-Cholesten-26-oic Acids - Potent Ligands for the DAF-12 Receptor inCaenorhabditis elegans

Autor: Teymuras V. Kurzchalia, Hans-Joachim Knölker, Frank Däbritz, Eugeni V. Entchev, René Martin

Publikováno v: European Journal of Organic Chemistry. 2009:3703-3714

Using a highly stereoselective Evans aldol reaction for the introduction of the stereogenic center at C-25, we describe an efficient synthesis of the orthogonally diprotected (25S)-26-hydroxycholesterol 11. In a few synthetic steps, this crucial inte

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::11ed9117472d9d3a360a4a90d72e0082
https://doi.org/10.1002/ejoc.200900443

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New conformational flexible phosphane and phosphane oxide macrobicycles

Autor: Gabriele Theumer, Frank Däbritz, Ingmar Bauer, Margit Gruner

Publikováno v: Tetrahedron. 65:2995-3002

The synthesis of two large diastereomeric phosphane oxide macrobicycles 3 and 4 succeeded in comparatively good yield by a tripod-coupling strategy using the tripodal components 1 and 2 as building blocks. 1 H, 13 C and 31 P NMR spectra of the two ca

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::5a3d739b4ac468c623322311f8a3a211
https://doi.org/10.1016/j.tet.2009.01.102

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Synthesis, Derivatisation and Structural Characterisation of a New Macrobicyclic Phosphane Oxide Cryptand

Autor: Ingmar Bauer, Frank Däbritz, Anne Jäger

Publikováno v: European Journal of Organic Chemistry. 2008:5571-5576

Following a tripod-coupling strategy a new phosphane oxide cage compound was synthesised in comparatively high yield. The X-ray crystal structure obtained shows a large cavity and an out-positioned P=O moiety in the solid state. A stable in-isomer wa

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::e87342c47e4b2ec6150f9d87ed211e01
https://doi.org/10.1002/ejoc.200800630

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Transition Metals in Organic Synthesis, Part 87: An Efficient Palladium-Catalyzed Route to 2-Oxygenated and 2,7-Dioxygenated Carbazole Alkaloids - Total Synthesis of 2-Methoxy-3-methylcarbazole, Glycosinine, Clausine L, Mukonidine, and Clausine V

Autor: Anne Jäger, Hans-Joachim Knölker, Frank Däbritz, Micha P. Krahl, Ronny Forke

Publikováno v: Synlett. 2008:1870-1876

Optimization of the palladium(II)-catalyzed oxidative cyclization of N,N-diarylamines opens up the way to an efficient synthesis of 2-oxygenated and 2,7-dioxygenated carbazole alkaloids including 2-methoxy-3-methylcarbazole, glycosinine, clausine L,

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::91a45ae261d81fa7da44e0ad74dc62bc
https://doi.org/10.1055/s-2008-1078508

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Cure kinetics modeling and thermomechanical properties of cycloaliphatic epoxy-anhydride thermosets modified with hyperstar polymers

Autor: Alberto Belmonte, Xavier Ramis, Angels Serra, Frank Däbritz, Xavier Fernández-Francos, Brigitte Voit

Publikováno v: UPCommons. Portal del coneixement obert de la UPC
Universitat Politècnica de Catalunya (UPC)
Recercat. Dipósit de la Recerca de Catalunya
Universitat Jaume I

Hyperstar polymers (HSPs) with hyperbranched aromatic polyester core and arms consisting of block copolymers of poly(methyl methacrylate) and poly(hydroxyethyl methacrylate) have been used as polymeric modifiers in cycloaliphatic epoxy-anhydride form

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::917a1e8b321b0aff244283827376510a
http://hdl.handle.net/2117/24696

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