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
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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.
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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
Organophosphorus chemistry 221. reaction of 3-formyl-4-chromone with ter- and penta-valent phosphorus compounds
TL;DR: In this paper, trialkyl phosphites and dialkyl phosphonates attack the aldehydic carbonyl-carbon of 3-formyl-4-chromone, yielding the corresponding α-alkoxy (4), and α-hydroxy-phosphonates (6), respectively.
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'Michael-Michael-Wittig' reactions of (2,4-dioxobutylidene)phosphoranes with 3-formylchromones
Peter Langer,Edith Holtz +1 more
TL;DR: In this paper, 4.4-(2'-hydroxybenzoyl)salicylic esters and amides were prepared by domino 'Michael-retro-Michael-Wittig' reactions of (2,4-dioxobutylidene)triphenylphosphoranes with 3-formyl-chromones.
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1,3-Dibromo-5,5-dimethylhydantoin as catalyst for the conversion of aldehydes to their 1,1-diacetates (acetylals) under solvent-free and neutral conditions
TL;DR: In this article, a mild acetylation of aldehydes with acetic anhydride catalysed by 1,3-dibromo-5,5-dimethylhydantoin (DBH) was performed under neutral conditions to produce corresponding 1,1-diacetates (acetylals) in good to excellent yields.
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Pericyclic Transformations at the Periphery of Chromen‐4‐one (=4H‐1‐Benzopyran‐4‐one): An Unusual Preference for a 1,5‐Shift of Allylic Moieties over the Ene Reaction
TL;DR: In this article, it was shown that the N-atom of the chromen-4-one (4H-1-benzopyran-4one) system exhibits a rather unusual preference for an overall [1,5] shift of the allylic C-atom.