Zobrazeno 1 - 10
of 15
pro vyhledávání: '"Stefanie V. Kohlhepp"'
Publikováno v:
Chemistry (Weinheim an Der Bergstrasse, Germany)
The dynamic equilibria of organomagnesium reagents are known to be very complex, and the relative reactivity of their components is poorly understood. Herein, a combination of DFT calculations and kinetic experiments is employed to investigate the de
Publikováno v:
Chem. Eur. J.
The synthesis of ketones through addition of organometallic reagents to aliphatic carboxylic acids is a straightforward strategy that is limited to organolithium reagents. More desirable Grignard reagents can be activated and controlled with a bulky
Publikováno v:
Chemistry – A European Journal. 28
Autor:
Abraham Mendoza, Xiang Yin, Stefanie V. Kohlhepp, Rajdip Chowdhury, My Linh Tong, Zhunzhun Yu
Publikováno v:
Journal of the American Chemical Society
Photoexcited dihydronicotinamides like NADH and analogues have been found to generate alkyl radicals upon reductive decarboxylation of redox-active esters without auxiliary photocatalysts. This principle allowed aliphatic photocoupling between redox-
Publikováno v:
European Journal of Organic Chemistry. 2016:2170-2176
The marinopyrroles are a new class of natural products with highly interesting biomedical and structural features. We herein provide a concise, nitrogen-protective-group-free synthesis of marinopyrrole A, constituting the as yet most efficient route.
Autor:
Christoph Patzelt, Tanja Gulder, Alexander Pöthig, Wolfgang Bettray, Anna Ulmer, Maciej Stodulski, Stefanie V. Kohlhepp
Publikováno v:
Chemistry - A European Journal. 21:1444-1448
A tertiary hydroxy group α to a carboxyl moiety comprises a key structural motif in many bioactive substances. With the herein presented metal-free rearrangement of imides triggered by hypervalent λ(3)-iodane, an easy and selective way to gain acce
Publikováno v:
Journal of Natural Products. 77:2331-2334
Fluorine-containing natural products are extremely rare. The recent report on the isolation and biological activity of the bacterial secondary metabolite 3-(3,5-di-tert-butyl-4-fluorophenyl)propionic acid was thus highly remarkable. The compound cont
Autor:
Tanja Gulder, Stefanie V. Kohlhepp
Publikováno v:
ChemInform. 47
The fluorination of organic molecules is a rapidly evolving and exciting field in synthesis, which still poses huge challenges despite the advances made in the past decades. Hypervalent iodine(III) reagents, which have already proven their versatilit
Autor:
Tanja Gulder, Stefanie V. Kohlhepp
Publikováno v:
Chemical Society reviews. 45(22)
The fluorination of organic molecules is a rapidly evolving and exciting field in synthesis, which still poses huge challenges despite the advances made in the past decades. Hypervalent iodine(III) reagents, which have already proven their versatilit
Autor:
Maciej Stodulski, Wolfgang Bettray, Christoph Patzelt, Stefanie V. Kohlhepp, Tanja Gulder, Anna Ulmer, Alexander Poethig
Publikováno v:
ChemInform. 46
The metal-free rearrangement of imides, catalyzed by in-situ formed trivalent iodine catalysts furnishes brominated α-hydroxycarboxylamides in high yields.