Zobrazeno 1 - 9
of 9
pro vyhledávání: '"Tobias Dahmen"'
Publikováno v:
Beilstein Journal of Organic Chemistry, Vol 9, Iss 1, Pp 1620-1629 (2013)
The intramolecular radical addition to aniline derivatives was investigated by DFT calculations. The computational methods were benchmarked by comparing the calculated values of the rate constant for the 5-exo cyclization of the hexenyl radical with
Externí odkaz:
https://doaj.org/article/2e7d3ee373c345bc8cbab2d618be00d0
Autor:
Andreas Gansäuer, Tobias Dahmen
Publikováno v:
CHIMIA, Vol 66, Iss 6 (2012)
Esters are of widespread use for protecting carboxylic acids in organic synthesis. However, methods to cleave esters often employ harsh conditions. Herein, we report a new and mild method for the reductive cleavage of 2,2,2-trichloroethylesters (TCE
Externí odkaz:
https://doaj.org/article/52842595c59946d69004612a38023782
Publikováno v:
Angewandte Chemie (International Ed. in English)
A titanocene‐catalyzed regiodivergent radical arylation is described that allows access to either enantiomerically pure tetrahydroquinolines or indolines from a common starting material. The regioselectivity of epoxide opening that results in the h
Publikováno v:
Science (New York, N.Y.). 364(6442)
Markovnikov falls to chromium and titanium Ring opening of strained triangular epoxides is a versatile method for making alcohols. However, these reactions are limited by their tendency to leave the oxygen on the more heavily substituted carbon, in a
Autor:
Godfred D. Fianu, Robert A. Flowers, Andreas Gansäuer, Antonius Michelmann, Christian Kube, Tobias Dahmen, Daniel von Laufenberg, Sven Hildebrandt
Publikováno v:
Angewandte Chemie. 127:7109-7112
Durch gezielte Ausnutzung von Losungsmittel- und Anioneneffekten wurden [Cp2Ti]+-Komplexe fur die atomokonomische Katalyse in Ein-Elektronen-Schritten entwickelt und zum ersten Mal eingesetzt. Die kationischen Komplexe stellen besonders robuste und a
Autor:
Daniel von Laufenberg, Tobias Dahmen, Christian Kube, Andreas Gansäuer, Antonius Michelmann, Robert A. Flowers, Sven Hildebrandt, Godfred D. Fianu
Publikováno v:
Angewandte Chemie (International ed. in English). 54(24)
By exploiting solvent and anion effects, [Cp2Ti](+) complexes for atom-economical catalysis in single-electron steps were developed and applied for the first time. These complexes constitute remarkably stable and active catalysts for radical arylatio
Autor:
Daniel von Laufenberg, Antonius Michelmann, Christian Kube, Meriam Seddiqzai, Godfred D. Fianu, Andreas Gansäuer, Stefan Grimme, Tobias Dahmen, Maike Behlendorf, Robert A. Flowers, Dhandapani V. Sadasivam, Rebecca Sure
Publikováno v:
Chemistry (Weinheim an der Bergstrasse, Germany). 21(1)
An atom-economical and catalytic arylation of epoxide-derived radicals is described. The key step of the catalytic system is a sequential electron and proton transfer for the rearomatization of the radical σ-complex and catalyst regeneration. Kineti
Autor:
Andreas Gansaeuer, Tobias Dahmen
Publikováno v:
ChemInform. 43