H
Hans-Jürgen Hansen
Researcher at University of Zurich
Publications - 171
Citations - 2325
Hans-Jürgen Hansen is an academic researcher from University of Zurich. The author has contributed to research in topics: Heptalene & Azulene. The author has an hindex of 25, co-authored 171 publications receiving 2278 citations. Previous affiliations of Hans-Jürgen Hansen include Hoffmann-La Roche.
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Journal ArticleDOI
1H‐Phenalen‐1‐one: Photophysical Properties and Singlet‐Oxygen Production
Esther Oliveros,Patricia Suardi-Murasecco,T. Aminian-Saghafi,André M. Braun,Hans-Jürgen Hansen +4 more
TL;DR: The 1H-phenalen-1-one (1) has been shown to be one of the most efficient singlet-oxygen sensitizers in both polar and non-polar media, in particular in the area of relatively high energies of excitation as mentioned in this paper.
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Eine einfache Allencarbonsäureester‐Synthese mittels der Wittig‐Reaktion
TL;DR: A simple one-pot synthesis of variously substituted α-allenic esters was described in this article, where the Wittig-reaction with acid chlorides as starting material can also be used for the synthesis of 2-H-substituted allenecarboxylates.
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Untersuchungen über aromatische Amino‐Claisen‐Umlagerungen
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Umlagerung von Allyl‐aryläthern und Allyl‐cyclohexadienonen mittels Bortrichlorid
TL;DR: In this article, a charge-induced [3 s, 3 s] sigmatropic rearrangement of allyl aryl ethers with an alkyl group in the o-position, in the presence of boron trichloride, was studied.
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Geltungsbereich und Mechamismus der durch Silberionen katalysierten Propargylester‐Allenylester‐Umlagerung nach Saucy und Marbet
TL;DR: The mechanism of the catalysis of the reversible (propargyl ester)/(allenyl esters) rearrangement (10 ⇄ 11) by silver(I) ions was investigated, using optically active and diastereoisomeric esters as well as 14C- and 18O-labelling as discussed by the authors.