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Yendra Linnau
Researcher at University of Graz
Publications - 8
Citations - 35
Yendra Linnau is an academic researcher from University of Graz. The author has contributed to research in topics: Acylation & Nitration. The author has an hindex of 4, co-authored 8 publications receiving 35 citations.
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Chinolizine und Indolizine, XIII. Acyl-2-hydroxy-4-chinolizinone
Thomas Kappe,Yendra Linnau +1 more
TL;DR: In this article, the Klosa-Ziegler acylation of 2-picolylketones with reactive trichlorophenyl malonates leads to 1-acyl-2-hydroxy-4-quinoliziones.
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Synthesen kondensierter „Hydroxy-aza- und-oxa-chinolizinone”
TL;DR: In this paper, the synthesis of 4-hydroxy-2-pyridone derivatives by the reaction of 2,4,6-trichlorophenyl malonates with azomethines incorporating the C=N bond in a ring system is reported.
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Synthesen von Heterocyclen, 167. Mitteilung Chinolizine und Indolizine, VIII. Über Pyrono‐chinolizinone
Thomas Kappe,Yendra Linnau +1 more
TL;DR: The reaction of 2-hydroxy-4-quinolizinone (3) with diketene yields the α-pyrone derivatives 4 and 5 and the γ pyrone derivative "dehydro-Wollenberg-compound'' 2 as discussed by the authors.
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Synthesen von Heterocyclen, 135. Mitt.: Chinolizine und Indolizine, VI: eine Synthese von 2-Hydroxy-benzo[a] chinolizin-4-onen
Thomas Kappe,Yendra Linnau +1 more
TL;DR: In this paper, 2.2-Hydroxy-6,7-dihydro-4H-benzo[a]chinolizin-4-one (3a-p) werden durch Kondensation von 1-Alkyl-3,4-dh-isochinolinen (1a-g) with Malonsaure-bis-2,4,6-trichlorphenylestern (2a-e) erhalten.
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Chinolizine und Indolizine, XIV Umlagerungen von Heterocyclen, X Ringumwandlungen von 1-Acyl-2-hydroxy-4-chinolizinonen
Thomas Kappe,Yendra Linnau +1 more
TL;DR: By heating with ammonia or aniline 1-acyl-2-hydroxy-4-quinolizinones (1 a-e) are transformed to 4-hydrox-5-(2-pyridyl)-2-Pyridones (3 a-f), with4 a-d as minor sideproducts as discussed by the authors.