Výsledky vyhledávání - "Markus Jonek"

Evaluation of benzthiazolidine-based formamidinium salts for the synthesis of penem-type β-lactams by uncatalysed carbonylation of acyclic diaminocarbenes

Autor: Michael Leibold, Ulrich Siemeling, Markus Jonek, Clemens Bruhn, Hannes Buhl

Publikováno v: Zeitschrift für Naturforschung B. 74:365-372

The reaction of [iPr2N=CHCl]Cl with 2-phenylbenzthiazolidine (Ph-BtzH) and subsequent anion metathesis afforded the formamidinium salt [(Ph-Btz)CH(NiPr2)][PF6] ([1aH][PF6]). The reaction of [1aH][PF6] with (Me3Si)2NNa in the presence of grey selenium

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::05be867821476eb73c6ce2d1d8fb9e4b
https://doi.org/10.1515/znb-2019-0017

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An N-Heterocyclic carbene with a sulfonamide group embedded within the heterocyclic backbone

Autor: Markus Jonek, Christian Ganter, Abdelaziz Makhloufi

Publikováno v: Journal of Organometallic Chemistry. 838:37-41

The first N-heterocyclic carbene 1 featuring a cyclic sulfonamide structural motif has been prepared from 1,2,4-benzothiadiazine-1,1-dioxide. Within the six-membered heterocycle the carbene C atom is bound to an amino and a sulfonamido group. The (CO

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::8582bfb97b6a20efe56f33b252ca159a
https://doi.org/10.1016/j.jorganchem.2017.03.035

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First N-Heterocyclic Carbenes Relying on the Triazolone Structural Motif: Syntheses, Modifications and Reactivity

Autor: Janina Diekmann, Markus Jonek, Christian Ganter

Publikováno v: Chemistry - A European Journal. 21:15759-15768

4-Phenylsemicarbazide and 1,5-diphenylcarbazide are suitable starting materials for the syntheses of N-heterocyclic carbene (NHC) compounds with new backbone structures. In the first case, cyclisation and subsequent methylation leads to a cationic pr

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5fa2833acba06d764bf9e52cb1f9c4fa
https://doi.org/10.1002/chem.201502685

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Synthesis and reactivity of (benz)imidazol-2-ylidenes with exocyclic N-acyl or N-sulfonyl groups

Autor: Walter Frank, Philipp Rech, Markus Jonek, Christian Ganter, Abdelaziz Makhloufi

Publikováno v: Journal of Organometallic Chemistry. 750:140-149

Imidazolium and benzimidazolium salts featuring exocyclic N-acyl or N-sulfonyl groups were prepared and converted in situ to the corresponding N-heterocyclic carbenes by deprotonation. The NHCs were further converted to group six adducts (sulfur and

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::39a3ac989eb7d2a3a0046a5343f0d683
https://doi.org/10.1016/j.jorganchem.2013.10.058

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