Zobrazeno 1 - 10
of 1 190
pro vyhledávání: '"Martin, Nieger"'
Autor:
Simone Gräßle, Laura Holzhauer, Nicolai Wippert, Olaf Fuhr, Martin Nieger, Nicole Jung, Stefan Bräse
Publikováno v:
Beilstein Journal of Organic Chemistry, Vol 20, Iss 1, Pp 1396-1404 (2024)
A synthesis route to access triazole–pyrazole hybrids via triazenylpyrazoles was developed. Contrary to existing methods, this route allows the facile N-functionalization of the pyrazole before the attachment of the triazole unit via a copper-catal
Externí odkaz:
https://doaj.org/article/b334d831695d45069d60fb967475988d
Autor:
Dr. Yichuan Wang, Yuting Li, Dr. Olaf Fuhr, Dr. Martin Nieger, Dr. Zahid Hassan, Prof. Dr. Stefan Bräse
Publikováno v:
ChemistryOpen, Vol 13, Iss 8, Pp n/a-n/a (2024)
Abstract In this report, a new series of mono‐, di‐, tri‐, and tetra‐cationic pyridinium and vinyl pyridinium‐modified [2.2]paracyclophanes as useful molecular tectons for supramolecular systems are described. Regioselective functionalizati
Externí odkaz:
https://doaj.org/article/7e6a8ae027534d92868549f98a78e4ba
Autor:
Jasmin M. Busch, Florian R. Rehak, Valentina Ferraro, Martin Nieger, Marianna Kemell, Olaf Fuhr, Wim Klopper, Stefan Bräse
Publikováno v:
ACS Omega, Vol 9, Iss 2, Pp 2220-2233 (2024)
Externí odkaz:
https://doaj.org/article/67823cec48664575addc899fb94d01c4
Publikováno v:
Heliyon, Vol 10, Iss 4, Pp e25248- (2024)
A novel series of 1,2-dihydroquinolinhydrazonopropanoate have been synthesized via a convenient aza-Michael addition reaction between hydrazinylquinolinones and ethyl propiolate in ethanol under refluxing temperature. The structures for all obtained
Externí odkaz:
https://doaj.org/article/cfcddc0ffea44e9c86bda78e5c847994
Autor:
Susanne Kirchner, Anna-Lena Leistner, Peter Gödtel, Angelika Seliwjorstow, Sven Weber, Johannes Karcher, Martin Nieger, Zbigniew Pianowski
Publikováno v:
Nature Communications, Vol 13, Iss 1, Pp 1-14 (2022)
The development of photochromic systems is an important and growing area of research, in particular for bioactive molecular photoswitches. Here, the authors report on photopharmacological antimitotic agents, operational under visible light, based on
Externí odkaz:
https://doaj.org/article/6eee7fa994084b529345f32c9466e4e7
Publikováno v:
Beilstein Journal of Organic Chemistry, Vol 17, Iss 1, Pp 2773-2780 (2021)
We describe the synthesis of so far synthetically not accessible 3,6-substituted-4,6-dihydro-3H-pyrazolo[3,4-d][1,2,3]triazines as nitrogen-rich heterocycles. The target compounds were obtained in five steps, including an amidation and a cyclative cl
Externí odkaz:
https://doaj.org/article/50e41f45cc444177add2a48c383de361
Autor:
Dr. Thomas Hurrle, Dr. Franziska Gläser, Dr. Manuel C. Bröhmer, Dr. Martin Nieger, Prof. Dr. Stefan Bräse
Publikováno v:
ChemistryOpen, Vol 10, Iss 5, Pp 587-592 (2021)
Abstract Based on the Diels‐Alder reaction of vinylchromenes with electron‐poor dienophiles, we developed a strategy for the synthesis of tetrahydrocannabinol derivatives. Substituted vinyl chromenes could be converted with several dienophiles to
Externí odkaz:
https://doaj.org/article/46ba049ac4324191a3e785b5df8beb18
Autor:
Fabian Hundemer, Lorenz Graf von Reventlow, Céline Leonhardt, Mika Polamo, Martin Nieger, Stefan M. Seifermann, Alexander Colsmann, Prof. Dr. Stefan Bräse
Publikováno v:
ChemistryOpen, Vol 8, Iss 12, Pp 1413-1420 (2019)
Abstract We demonstrate modular modifications of the widely employed emitter 2,4,5,6‐tetra(9H‐carbazol‐9‐yl)isophthalonitrile (4CzIPN) by replacing one or both nitrile acceptors with oxadiazole groups via a tetrazole intermediate. This allows
Externí odkaz:
https://doaj.org/article/bb33a3d0d41e4857b5638cb257caee2f
Autor:
Stefan Isenberg, Stefan Weller, Denis Kargin, Prof. Dr. Srećko Valić, Dr. Brigitte Schwederski, Dr. Zsolt Kelemen, Dr. Clemens Bruhn, Kristijan Krekić, Dr. Martin Maurer, Christoph M. Feil, Dr. Martin Nieger, Prof. Dr. Dr. h.c. Dietrich Gudat, Prof. Dr. László Nyulászi, Prof. Dr. Rudolf Pietschnig
Publikováno v:
ChemistryOpen, Vol 8, Iss 10, Pp 1235-1243 (2019)
Abstract A series of bis‐[3]ferrocenophanes of the general type Fe(C5H4E’)2E−E(E'C5H4)2Fe (E=P, SiH and E’=PtBu, NneoPentyl, NSi(CH3)3) with an isolobal molecular framework have been prepared and characterized by heteronuclear NMR spectroscop
Externí odkaz:
https://doaj.org/article/92263e788ba34924a273ae8f942b755a
Autor:
Dr. Sylvain Grosjean, Patrick Hodapp, Dr. Zahid Hassan, Prof. Dr. Christof Wöll, Dr. Martin Nieger, Prof. Dr. Stefan Bräse
Publikováno v:
ChemistryOpen, Vol 8, Iss 6, Pp 743-759 (2019)
Abstract Modular synthesis of structurally diverse functionalized azobiphenyls and azoterphenyls for the realization of optically switchable materials has been described. The corresponding synthesis of azobiphenyls and azoterphenyls by stepwise Mills
Externí odkaz:
https://doaj.org/article/54346a4c1da34e7eb405e4cfbdcd1074