Journal ArticleDOI
Chemistry and application of 4-oxo-4H-1-benzopyran-3-carboxaldehyde
Reads0
Chats0
TLDR
The chemistry and application of the title aldehyde and some simple derivatives thereof are reviewed in this paper, where the authors propose a simple derivative of the aldehydes, which they call simple aldeheeds.About:
This article is published in Journal of Heterocyclic Chemistry.The article was published on 2008-11-01. It has received 42 citations till now. The article focuses on the topics: Benzopyran.read more
Citations
More filters
Journal ArticleDOI
Recyclizations of 3-formylchromones with binucleophiles
Andrey S. Plaskon,Andrey S. Plaskon,Oleksandr O. Grygorenko,Oleksandr O. Grygorenko,Sergey V. Ryabukhin +4 more
Journal ArticleDOI
4-Chloro-3-(trifluoroacetyl)- and 4-chloro-3-(methoxalyl)coumarins as novel and efficient building blocks for the regioselective synthesis of 3,4-fused coumarins
Viktor O. Iaroshenko,Viktor O. Iaroshenko,Friedrich Erben,Satenik Mkrtchyan,Satenik Mkrtchyan,Ani Hakobyan,Ani Hakobyan,Marcelo Vilches-Herrera,Sergii Dudkin,Alina Bunescu,Alexander Villinger,Vyacheslav Ya. Sosnovskikh,Peter Langer +12 more
TL;DR: In this article, the starting materials were prepared by the reaction of 4-hydroxycoumarin with trifluoroacetic anhydride and methyl 2-chloro-2-oxoacetate in the presence of trimethylsilylchloride.
Journal ArticleDOI
Three-component reactions of isocyanoacetates, amines and 3-formylchromones initiated by an unexpected aza-Michael addition.
TL;DR: A new mode of three-component reactions between isocyanoacetates, amines and 3-formylchromones is presented, which enables an efficient synthesis of polysubstituted pyrroles.
Journal ArticleDOI
3-Methoxalylchromone—a novel versatile reagent for the regioselective purine isostere synthesis
Satenik Mkrtchyan,Viktor O. Iaroshenko,Viktor O. Iaroshenko,Sergii Dudkin,Ashot Gevorgyan,Marcelo Vilches-Herrera,Gagik Ghazaryan,Dmitriy M. Volochnyuk,Dmitriy M. Volochnyuk,Dmytro Ostrovskyi,Zeeshan Ahmed,Alexander Villinger,Vyacheslav Ya. Sosnovskikh,Peter Langer +13 more
TL;DR: The first synthesis of 3-methoxalylchromone was described, where the reaction of the latter with electron-rich aminoheterocycles afforded a set of heteroannelated pyridines bearing a CO(2)Me substituent located at the α-position of the pyridine core.
Journal ArticleDOI
Synthesis of Chromone-Related Pyrazole Compounds.
TL;DR: This review will cover the literature on the chromone and pyrazole dual chemistry and their outcomes in the 21st century with a focus on the synthesis of chromone-pyrazole dyads.
References
More filters
Journal ArticleDOI
Condensation of chromone-3-carboxaldehyde with phenylacetic acids: An efficient synthesis of (E)-3-styrylchromones
TL;DR: An efficient and diastereoselective synthetic method for preparing (E)-3-styrylchromones has been developed by the reaction of chromone-3-carboxaldehyde with phenylacetic acids in the presence of potassium tert-butoxide under classical heating conditions or microwave irradiation.
Journal ArticleDOI
Studies in chromone derivatives: cycloaddition reactions of 4-oxo 4h-1-benzopyran-3-carboxaldehyde imines with benzonitrile oxide and nitrilimine of 4-oxo-4h-1-benzopyran-3-carboxaldehyde with alkenes
TL;DR: The chromone imines and benzonitrile oxide reacted regiospecifically to yield Δ2-1,2,4 oxadiazolinyl chromones as discussed by the authors in good yields.
Journal ArticleDOI
Improved Selective Reduction of 3-Formylchromones Using Basic Alumina and 2-Propanol
TL;DR: Treatment of formylchromones, dissolved in 2-propanol with basic alumina at 75°C, selectively reduces the formyl group with good yields without any activation process of the alumina.
Journal ArticleDOI
Benzopyrans. Part 30. Synthesis of substituted xanthones from 3-acyl-2-methyl-1-benzopyran-4-ones
TL;DR: The xanthone as mentioned in this paper was derived from the base catalysed self-condensation of the chromone and showed that it can be obtained by refluxing with NaOMe in MeOH.
Journal ArticleDOI
Microwave induced synthesis of 3-methyl-4-[(chromon-3-yl)- methylene]-1-phenyl pyrazolin- 5-(4h)-ones with alumina support and in solvent free conditions
B. K. Karale,V. P. Chavan,A. S. Mane,R. V. Hangarge,Charansingh H. Gill,Murlidhar S. Shingare +5 more
TL;DR: In this paper, 4-oxo-(4H)-1-benzopyran-3-carboxaldehydes are condensed with 3-methyl-1-phenyl pyrazolin-5-(4h)-one under microwave activation to afford different 3methyl-4-[(chromon-3yl)- methylene]-1-pphenyl prazolin 5-(4 h)-ones (1−13) with alumina support and in solvent free conditions.