Non-benzenoid Aromatic Heterocycles. I. Reactions of 4-Pyrone, 4-Thiopyrone, and their Pyrylium Salts with Active Methylene Compounds
Masaki Ohta,Hiroshi Kato +1 more
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This article is published in Bulletin of the Chemical Society of Japan.The article was published on 1959-07-01 and is currently open access. It has received 34 citations till now. The article focuses on the topics: Methylene.read more
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Journal ArticleDOI
Neuere Methoden der präparativen organischen Chemie III. 3. Aromatische Verbindungen aus Pyryliumsalzen
TL;DR: Substituierte Pyryliumsalze, die leicht erhaltlich sind, eignen sich zur Herstellung zahlreicher, oft schwer zuganglicher aromatischer Verbindungen der heterocyclischen and isocyclicalhen Reihe as mentioned in this paper.
Journal ArticleDOI
Stable and efficient fluorescent red and green dyes for external and internal conversion of blue OLED emission
Sally Ann Swanson,Greg M. Wallraff,Jian P. Chen,Weijie Zhang,Luisa D. Bozano,Kenneth R. Carter,Jesse R. Salem,Reymundo Villa,J. Campbell Scott +8 more
TL;DR: In this paper, a series of diphenylamine-substituted coumarin, (dicyanomethylene)pyran, and benzophenoxazone dyes were synthesized and reported on their optical and electroluminescent properties, thermal and photooxidative stabilities.
Book ChapterDOI
Pyrylium Salts Part I. Syntheses
TL;DR: In this article, the synthesis of pyrylium salts is classified into three groups according to the number of building blocks required to form the ring in a one-step process.
Journal ArticleDOI
Infra-red absorption of heteroaromatic and benzenoid six-membered monocyclic nuclei—XI: Pyr-4-ones and pyr-4-thiones
A.R. Katritzky,R.Alan Jones +1 more
TL;DR: The infra-red spectra of six pyrones and pyrthiones in the region 2000-800 cm −1 are discussed and tentative assignments for most of the bands are suggested by analogy with other heteroaromatic compounds.
Journal ArticleDOI
Über alkylsubstituierte Pyrylo‐ und Pyridino‐cyanine I 2,6‐Dimethylpyrylo‐ und 2,6‐Dimethylpyridino‐cyanine aus 2,6‐Dimethyl‐γ‐pyron
József Kelemen,R. Wizinger +1 more
TL;DR: In this paper, 2,6-Dimethylγ-pyron lasst sich bereits in Essigsaureanhydrid with aktiven Methylenverbindungen und Methylcarbeniumsalzen kondensieren.
References
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Journal ArticleDOI
Über Reaktionen mit Pyryliumsalzen, I. Die Nitrierung von symm. Triphenylbenzol
TL;DR: In this paper, a bisher unbekannte Synthese aromatischer Nitroverbindungen aus Pyryliumsalzen mit Nitromethan wird nachgewiesen, das das von Vorlander als 1.4.3-Diphenyl-5-[4-nitro-phenyl]-benzol (II) beschriebene Mononitroprodukt aus symm. Triphenyl-(3.6-Triphenyl)-nitrobenzols (
Journal ArticleDOI
Reaktionen mit Pyryliumsalzen, II. Aromatische Nitroverbindungen aus Pyryliumsalzen
TL;DR: In this article, a pyryliumsalzen mit Nitromethan werden bisher nicht zugangliche Nitroverbindungen dargestellt; ihre Reduktion ergibt die zugehorigen Amine.
Related Papers (5)
Über alkylsubstituierte Pyrylo‐ und Pyridino‐cyanine I 2,6‐Dimethylpyrylo‐ und 2,6‐Dimethylpyridino‐cyanine aus 2,6‐Dimethyl‐γ‐pyron
József Kelemen,R. Wizinger +1 more