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Journal ArticleDOI

Chemistry and application of 4-oxo-4H-1-benzopyran-3-carboxaldehyde

01 Nov 2008-Journal of Heterocyclic Chemistry (Wiley)-Vol. 45, Iss: 6, pp 1529-1547
TL;DR: 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.
Citations
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Journal ArticleDOI
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.

38 citations

Journal ArticleDOI
Jiayu Liao1, Wei Jie Yap1, Ji'en Wu1, Ming Wah Wong1, Yu Zhao1 
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.

36 citations

Journal ArticleDOI
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.
Abstract: The first synthesis of 3-methoxalylchromone was described. The reaction of the latter with electron-rich aminoheterocycles afforded a set of heteroannelated pyridines bearing a CO2Me substituent located at the α-position of the pyridine core.

34 citations

Journal ArticleDOI
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.
Abstract: Chromones, six-membered oxygen heterocycles, and pyrazoles, five-membered two-adjacent-nitrogen-containing heterocycles, represent two important classes of biologically active compounds. Certain derivatives of these scaffolds play an important role in medicinal chemistry and have been extensively used as versatile building blocks in organic synthesis. In this context, we will discuss the most relevant advances on the chemistry that involves both chromone and pyrazole rings. The methods reviewed include the synthesis of chromone-pyrazole dyads, synthesis of chromone-pyrazole-fused compounds, and chromones as starting materials in the synthesis of 3(5)-(2-hydroxyaryl)pyrazoles, among others. This review will cover the literature on the chromone and pyrazole dual chemistry and their outcomes in the 21st century.

33 citations


Cites background from "Chemistry and application of 4-oxo-..."

  • ...The reactivity of 3-formylchromone derivatives with a series of hydrazines has been studied in detail over the most recent years (for recent reviews see [103,104])....

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References
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Journal ArticleDOI
TL;DR: The titanium cation-exchanged montmorillonite efficiently catalyzed the selective acetalization of various carbonyl compounds as a recyclable solid acid as mentioned in this paper, which has an advantage of a strikingly simple workup procedure over conventional homogeneous acids.

69 citations

Journal ArticleDOI
TL;DR: The synthesis, characterisation and properties of polycyclic barbiturate pigments are described in this article, where the pigments have been tested as colourants for plastic and paint and the results of lightfastness, heatfastness and contact bleed tests are reported.

68 citations

Journal ArticleDOI
TL;DR: In this paper, the structure of the final products, deduced from the spectral data and confirmed by X-ray analysis, allows us to suggest reaction pathways for pyrimido[1,2-a]pyrimidines.

57 citations

Journal ArticleDOI
TL;DR: In this article, various tetrahydroquinoline derivatives have been synthesized by employing ceric ammonium nitrate in an aqueous medium and were oxidized to biheterocycles.

57 citations

Journal ArticleDOI
TL;DR: The benzopyranones 1 and 3 reacted with 2,3-dimethyl-1,3butadiene in the presence of titanium (IV) chloride to give the corresponding (4 + 2) cycloadducts 8 and 11, the former undergoing facile deformylation to give 9 and 10.

56 citations