Zobrazeno 1 - 10 of 29 pro vyhledávání: '"Tobias Vollgraff"'
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Akademický článek
Chalcogenido‐Dimethylgallates and ‐Indates DMPyr2[Me2M(μ2−E)]2 (M=Ga, In; E=S, Se): Building Blocks for Higher and Lower Order Chalcogenidoindates
Autor: Dr. Jannick Guschlbauer, Tobias Vollgraff, Dr. Lars H. Finger, Dr. Klaus Harms, Prof. Dr. Jörg Sundermeyer
Publikováno v: ChemistryOpen, Vol 10, Iss 2, Pp 83-91 (2021)
Abstract Metalation of the anions in the ionic liquids DMPyr[SH] and DMPyr[SeH] (DMPyr=1,1‐dimethylpyrrolidinium) by trimethylgallium and trimethylindium is investigated. The reaction proceeds via pre‐coordination of [EH]−, methane elimination
Externí odkaz: https://doaj.org/article/d0aa81c509e8479d83fd30882828e5dd
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2
Facile preparation of biodegradable poly(γ-butyrolactone) via base-assisted ring-opening polymerization
Autor: Alban Falconnet, Mathieu Nicolas, Tobias Vollgraff, Rupert Konradi, Bernd Bruchmann, Dieter Rodewald, A. Stephen K. Hashmi, Thomas Schaub
Publikováno v: Green Chemistry. 25:3624-3632
(Co)poly-γ-butyrolactone (pGBL) is a thermoplastic material of high interest to replace common plastics with a more sustainable alternative due to its biodegradability, re-monomerizability and opportunity to be obtained from renewable feedstocks.
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::063140c62e7d04c8349436ca40be1201
https://doi.org/10.1039/d3gc00261f
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5
Highly Selective Ortho‐Directed Dicarboxylation of Cyclopentadiene by Methylcarbonates and CO 2 or COS – First Insight into Co‐ordination Chemistry of New Ambident Ligands
Autor: Jörg Sundermeyer, Tobias Vollgraff
Publikováno v: Chemistry – A European Journal. 27:8517-8527
This research presents the highly regioselective syntheses of 1,2-dicarboxylated cyclopentadienide salts [Cat]2 [C5 H3 (CO2 )2 H] by reaction of a variety of organic cation methylcarbonate salts [Cat]OCO2 Me (Cat=NR4+ , PR4+ , Im+ ) with cyclopentadi
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::603bda52cd035ecc10b46c1032f5496a
https://doi.org/10.1002/chem.202100300
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6
Access to Functionalized Pyrenes, Peropyrenes, Terropyrenes, and Quarterropyrenes via Reductive Aromatization
Autor: Jörg Sundermeyer, Simon Werner, Tobias Vollgraff
Publikováno v: Angewandte Chemie (International Ed. in English)
Herein we report a versatile concept for the synthesis of fourfold functionalized, soluble pyrenes, peropyrenes, terropyrenes, and quarterropyrenes. They were obtained by a modular stepwise approach towards the rylene scaffold via Suzuki–Miyaura cr
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8d07a2333027ef213ea0fce1c535a5b4
https://doi.org/10.1002/anie.202100686
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8
Chalcogenido‐Dimethylgallates and ‐Indates DMPyr 2 [Me 2 M(μ 2 −E)] 2 (M=Ga, In; E=S, Se): Building Blocks for Higher and Lower Order Chalcogenidoindates
Autor: Jörg Sundermeyer, Klaus Harms, Jannick Guschlbauer, Tobias Vollgraff, Lars H. Finger
Publikováno v: ChemistryOpen. 10:83-91
Metalation of the anions in the ionic liquids DMPyr[SH] and DMPyr[SeH] (DMPyr=1,1-dimethylpyrrolidinium) by trimethylgallium and trimethylindium is investigated. The reaction proceeds via pre-coordination of [EH]- , methane elimination and formation
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::6d26759f6298d9838d4fc77254042269
https://doi.org/10.1002/open.202000347
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9
Reductive O-triflylation of naphthalene diimide: access to alkyne- and amine-functionalized 2,7-diazapyrenes
Autor: J. Michael Gottfried, Jörg Sundermeyer, Qitang Fan, Kevin Bania, Tobias Vollgraff, Simon Werner
Publikováno v: Organic Chemistry Frontiers. 8:5013-5023
Herein we report the facile reductive O-triflylation and O-silylation of naphthalene diimide as a scalable one-step approach. The resulting highly reactive 1,3,6,8-tetratriflato-2,7-diazapyrene was prepared at the 3 gram scale and serves as a versati
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::43c73841949abee5a00856a661ec4ac7
https://doi.org/10.1039/d1qo00862e
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10
Heavy silylchalcogenido lanthanates synthesis Ph4P[Cp3La–ESiMe3] (E = S, Se, and Te) via fluoride-induced demethylation of dimethylcarbonate to Ph4P[OCO2Me] key intermediate
Autor: Jörg Sundermeyer, Tobias Vollgraff, Jannick Guschlbauer, Ahmed Fetoh, Xiulan Xie
Publikováno v: Dalton Transactions. 50:13103-13111
We report a new high-yield synthesis of so far not accessible tetraphenylphosphonium methylcarbonate Ph4P[OCO2Me] via solvothermal fluoride-induced demethylation and MeF elimination at Me2CO3 (DMC) by Ph4P–F, structurally characterized as λ5-fluor
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::1f27daa0dbba27e4256deb7e2e74d1dd
https://doi.org/10.1039/d1dt02000e
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