Zobrazeno 1 - 10
of 21
pro vyhledávání: '"Kai Wittler"'
Autor:
Anke Spannenberg, Kai Wittler, Muhammad Sharif, Ralf Ludwig, Sebastian Reimann, Stella Schmode, Peter Langer, Thomas Fahrenwaldt
Publikováno v:
European Journal of Organic Chemistry. 2013:8115-8134
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::478c3b54a167c6717049351a2a9914fc
https://doi.org/10.1002/ejoc.201300607
https://doi.org/10.1002/ejoc.201300607
Autor:
Peter Langer, Leif R. Knöpke, Sebastian Reimann, Muhammad Sharif, Ralf Ludwig, Christian Roth, Annette-E. Surkus, Kai Wittler
Publikováno v:
Scopus-Elsevier
The Mizoroki-Heck coupling of 1-bromopyrene with acrylates provides a convenient access to a variety of 3-pyrenylacrylates in very good yields (up to 93%). Their photophysical properties combined with solvatochromic effects were studied. In addition,
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::725c011ab59f8817118a7c6b86fe8c5b
https://doi.org/10.5560/znb.2013-3004
https://doi.org/10.5560/znb.2013-3004
Publikováno v:
Angewandte Chemie. 125:2425-2429
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8661057c039a2be3f3544b47c0d90513
https://doi.org/10.1002/ange.201207065
https://doi.org/10.1002/ange.201207065
Autor:
Anke Spannenberg, Muhammad Sharif, Ralf Ludwig, Kai Wittler, Peter Langer, Sebastian Reimann, Peter Ehlers
Publikováno v:
Catalysis Communications. 25:142-147
A variety of mono- and diethynyl substituted fluorinated benzene derivatives was prepared by Sonogashira cross coupling reactions of 1,2-dibromo-3,5-difluorobenzene. The reactions proceed with very good site-selectivity in favor of position 1, due to
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::90d07843d9a8c10f8f769c345a3532dd
https://doi.org/10.1016/j.catcom.2012.03.022
https://doi.org/10.1016/j.catcom.2012.03.022
Publikováno v:
The Journal of Physical Chemistry B. 116:9507-9511
We have shown that far-infrared (FIR) spectroscopy is a sensitive probe for detecting the anion-cation interaction strength in imidazolium-based ionic liquids (ILs). Supported by density functional theory (DFT) calculations of frequencies and energie
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::25a9adf7b6983e6a905aabc9c968646b
https://doi.org/10.1021/jp306173t
https://doi.org/10.1021/jp306173t
Publikováno v:
Angewandte Chemie International Edition. 51:6236-6240
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5f9da7894914775b49b17409cf314738
https://doi.org/10.1002/anie.201200508
https://doi.org/10.1002/anie.201200508
Publikováno v:
Angewandte Chemie. 124:6340-6344
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e52a26f441741d0c1e6cae5050538122
https://doi.org/10.1002/ange.201200508
https://doi.org/10.1002/ange.201200508
Publikováno v:
Advanced Synthesis & Catalysis. 354:731-739
The reaction of 1,4-phenylenediacrylic acid with thionyl chloride was reinvestigated. In earlier reports [Liebigs Ann. Chem.1980, 1172; Heterocycles1995, 41, 2691; Adv. Synth. Catal.2009, 351, 2683] it was claimed that 3,7-dichlorobenzo[1,2-b;4,5-b
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::64b47274febb430f7fb4a90fbbe1aa76
https://doi.org/10.1002/adsc.201100668
https://doi.org/10.1002/adsc.201100668
Autor:
Martin Hein, Sebastian Reimann, Peter Langer, Muhammad Sharif, Ralf Ludwig, Kai Wittler, Alexander Villinger
Publikováno v:
European Journal of Organic Chemistry. 2012:604-615
Site-selective Sonogashira cross-coupling reactions of 1,4-dibromo-2-(trifluoromethyl)benzene have been performed, affording a variety of functionalized alkynyl-substituted (trifluoromethyl)benzenes. The site selectivity, in favor of position C-4, wa
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e6efba0e52391a3ebb08098c6446ab1d
https://doi.org/10.1002/ejoc.201100394
https://doi.org/10.1002/ejoc.201100394
Autor:
Peter Langer, Christian Roth, Leif R. Knöpke, Alexander Villinger, Muhammad Sharif, Sebastian Reimann, Ralf Ludwig, Kai Wittler, Annette-E. Surkus
Publikováno v:
European Journal of Organic Chemistry. 2011:5261-5271
As a new approach for tuning the electronic properties of pyrene derivatives, we converted 1-bromopyrene into different substituted styrenes using the Mizoroki–Heck reaction. Several 1-(arylalkenyl)pyrenes have been characterized and their electron
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7e526acec45247cba4331b2054703dcf
https://doi.org/10.1002/ejoc.201100620
https://doi.org/10.1002/ejoc.201100620