Author
H. Haverland
Bio: H. Haverland is an academic researcher. The author has an hindex of 1, co-authored 1 publications receiving 36 citations.
Papers
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TL;DR: In 2-Stellung unsubstituierte 3-Acyl-chromone wurden aus 2-Hydroxy-ω-acyl-acetophenonen durch Reaktion with Orthoameisensaure-triathylester und Acetanhydrid oder aus 1-hydroxy-α-formylacetophenon and Acetanehydrid/Natriumacetat dargestellt as mentioned in this paper.
Abstract: In 2-Stellung unsubstituierte 3-Acyl-chromone wurden aus 2-Hydroxy-ω-acyl-acetophenonen durch Reaktion mit Orthoameisensaure-triathylester und Acetanhydrid oder aus 2-Hydroxy-ω-formyl-acetophenon und Acetanhydrid/Natriumacetat dargestellt. Strukturbeweise wurden mit Hilfe von UV-, IR- und NMR-Spektren gefuhrt.
37 citations
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TL;DR: By the application of the Vilsmeier-Haack reaction to various o-hydroxyacetophenone derivatives, 4-oxo-4H-1-benzopyran-3-carboxaldehydes were synthesized in one step as discussed by the authors.
175 citations
104 citations
TL;DR: The authors present an examen approfondi de la synthese, des proprietes et des reactions de l'oxo-4 chromenecarbaldehyde-3 and l'utilisation de ses condensats for the preparation of divers systemes chimiques.
81 citations
TL;DR: In this article, the pyridine ring forming reactions are discussed and the factors determining the formation and regiospecificity of the ring-forming reactions are also discussed, as well as the properties of pyridines.
61 citations
TL;DR: In this article, a novel synthesis of 3-(hydroxymethyl)chromones from o-hydroxy-ω-(methylsulfinyl)acetophenones has been developed.
58 citations