Zobrazeno 1 - 10 of 88 pro vyhledávání: '"Martin Breugst"'
1
Akademický článek
Redetermination of the solvent-free crystal structure of l-proline
Autor: Jonas J. Koenig, Jörg-M. Neudörfl, Anne Hansen, Martin Breugst
Publikováno v: Acta Crystallographica Section E: Crystallographic Communications, Vol 74, Iss 8, Pp 1067-1070 (2018)
The title compound, (S)-pyrrolidine-2-carboxylic acid (C5H9NO2), commonly known as l-proline, crystallized without the inclusion of any solvent or water molecules through the slow diffusion of diethyl ether into a saturated solution of l-proline in e
Externí odkaz: https://doaj.org/article/907695ad08514d7a97b0703f07dd66b2
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2
Akademický článek
Cobalt-catalyzed C–H cyanations: Insights into the reaction mechanism and the role of London dispersion
Autor: Eric Detmar, Valentin Müller, Daniel Zell, Lutz Ackermann, Martin Breugst
Publikováno v: Beilstein Journal of Organic Chemistry, Vol 14, Iss 1, Pp 1537-1545 (2018)
Carboxylate-assisted cobalt(III)-catalyzed C–H cyanations are highly efficient processes for the synthesis of (hetero)aromatic nitriles. We have now analyzed the cyanation of differently substituted 2-phenylpyridines in detail computationally by de
Externí odkaz: https://doaj.org/article/cb410583346a42e9a4d9775324443e3d
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4
pH-Controlled Intramolecular Decarboxylative Cyclization of Biarylacetic Acids: Implication on Umpolung Reactivity of Aroyl Radicals
Autor: Joydev K. Laha, Upma Gulati, null Saima, Tim Schulte, Martin Breugst
Publikováno v: The Journal of Organic Chemistry. 87:6638-6656
A simple approach for the intramolecular aroylation of electron-rich arenes under mild conditions has been developed. A pH-controlled polarity umpolung strategy can be used to synthesize different fluorenones, which are important building blocks for
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b3a86b8fadc0fd31b76c2d87f5733ac7
https://doi.org/10.1021/acs.joc.2c00295
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8
Stereoselective Synthesis of 2‐Oxyenamides**
Autor: Sara‐Cathrin Krieg, Jennifer Grimmer, Annika Maria Pick, Harald Kelm, Martin Breugst, Georg Manolikakes
Publikováno v: European Journal of Organic Chemistry. 2022
An improved route for the highly stereoselective synthesis of (Z)-2-oxyenamides is reported. The desired products can be accessed in only three steps from aminoacetaldehyde dimethyl acetal as common, readily available building block in a highly modul
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::afbec0831cd09d7de81fc14d81feeacf
https://doi.org/10.1002/ejoc.202200772
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10
Breslow Intermediates (Amino Enols) and Their Keto Tautomers: First Gas-Phase Characterization by IR Ion Spectroscopy
Autor: Thomas Thomulka, Katrin Peckelsen, Mathias Paul, Albrecht Berkessel, Anthony J. H. M. Meijer, Giel Berden, Jos Oomens, Mathias Schäfer, Jonathan Martens, Jörg-M. Neudörfl, Martin Breugst
Publikováno v: Chemistry – A European Journal
Chemistry (Weinheim an Der Bergstrasse, Germany)
Chemistry-A European Journal, 27(8), 2662-2669. Wiley-VCH Verlag
Chemistry : a European Journal, 27, 2662-2669
Chemistry : a European Journal, 27, 8, pp. 2662-2669
Breslow intermediates (BIs) are the crucial nucleophilic amino enol intermediates formed from electrophilic aldehydes in the course of N‐heterocyclic carbene (NHC)‐catalyzed umpolung reactions. Both in organocatalytic and enzymatic umpolung, the
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::33e669a07632944e522ada6fafdbca16
https://doi.org/10.1002/chem.202003454
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