Journal ArticleDOI
Chemistry and application of 4-oxo-4H-1-benzopyran-3-carboxaldehyde
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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
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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.
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Journal ArticleDOI
Synthesis of 3-(5-Aryl-1,3,4-oxadiazol-2-yl)chromones
TL;DR: In this article, a general procedure for the synthesis of 3-(5-aryl-1,3,4-oxadiazol-2-yl)chromones by reaction of 3-formylchromone with aroylhydrazines, transformation of corresponding acyl-hydrazones into 1,3-dipoles by the action of bromine in the presence of sodium acetate, and intramolecular ring closure was proposed.
Journal ArticleDOI
A facile method for the preparation and cleavage of 1,1-diacetates of aldehydes
TL;DR: In this article, a method for the preparation and cleavage of 1,1-diacetates of aldehydes using AlCl 3 as a catalyst is described.
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Benzopyrans. 31. Reaction of 1,1-diacetyl-2-(6-methyl-4-oxo-4H-1-benzopyran-3-yl)ethylene with phenyldiazomethane
Chandra Kanta Ghosh,S. Sahana +1 more
TL;DR: Phenyldiazomethane yields with the title alkene 1 a mixture of the transcyclopropane 6, benzopyran 8, pyrazole 9, and cis -dihydrofuran 12 as mentioned in this paper.
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Benzopyrans. Part 43.1 Reactions of Some Simple Condensates of 4-oxo-4H-1-Benzopyran-3-Carboxaldehyde with Ethyl β-Aminocrotonate:
TL;DR: In this article, the chromone 2A (X = H(A), Me(B), Cl(C)) gives a mixture of the dihydropyridine 4A and pyranopyridine 15A, 2B gives 4B, and 2C gives varying amounts of the substituted enamine 3C, pyridone 4Cand benzophenone 8.
Journal ArticleDOI
Synthesis of 3-(3-Acetyl-5-aryl-2,3-dihydro-1,3,4-oxadiazol-2-yl)chromones
TL;DR: In this article, a method for the synthesis of 3-(3-acetyl-5-aryl-2,3-dihydro-1,3,4-oxadiazol-2-yl)chromones was proposed, which consists of the conversion of 3-formylchromones to aroylhydrazones and their subsequent heterocyclization using acetic anhydride.