83184-93-4

Upstream product

• 17422-74-1 3-Formylchromone 
• 98-86-2 acetophenone 
• 20913-05-7 (Benzoylmethylene)triphenylphosphorane 
• 536-74-3 phenylacetylene 
• 118-93-4 o-hydroxyacetophenone 
• 3453-00-7 diethyl benzoylmethylphosphonate 

Downstream Products

• 79161-77-6 3-(2,3-dihydro-4-phenyl-1,5-benzothiazepin-2-yl)-4H-1-benzopyran-4-one 
• 1005752-64-6 2-benzoyl-4-methoxy-9H-xanthen-9-one 
• 1005752-81-7 2-benzoyl-3,4-dimethoxy-9H-xanthen-9-one 

Relevant academic research and scientific papers

BF3?OEt2-Promoted Annulation for Substituted 2-Arylpyridines as Potent UV Filters and Antibacterial Agents

A simple and efficient BF3?OEt2 mediated methodology for the construction of diverse 2-phenylpyridines bearing benzophenone moieties from readily available 3-formylchromones and phenylacetylenes in wet acetonitrile was developed. The nitrogen source for the pyridine construction was derived from acetonitrile. This one-pot protocol proceeds via [3+2+1] annulation through cascade nucleophilic addition, hydrolysis, Michael-type addition, ring opening, and elimination reactions. The synthesized compounds may have applications as UV filters and exhibit potent antibacterial activities. (Figure presented.).

2-arylpyridines compound, use thereof and preparation method thereof

The present invention relates to an efficient method for synthesizing a 2-arylpyridine compound, the 2-arylpyridine compound according to the synthesis method, and a use thereof, wherein the synthesis method can easily and efficiently synthesize a variety

Organocatalytic [10+4] cycloadditions for the synthesis of functionalised benzo[a]azulenes

A direct and mild strategy for the synthesis of benzo[a]azulenes based on an organocatalytic [10+4] cycloaddition reaction is described. The strategy enables a diversity-oriented approach for the synthesis of various poly-functionalised azulenes from easily accessible starting materials.

Efficient one pot and chemoselective synthesis of functionalized 3-bromo-4,5-dihydroisoxazole derivatives via 1,3-dipolar cycloaddition reactions of nitrile oxides

A novel, metal-free and chemoselective approach for the synthesis of 4,5-dihydroisoxazole derivatives has been developed by the reaction of readily accessible starting materials including 4-oxo-4H-chromene-3-carbaldehyde, 1-phenyl-2-(1,1,1-triphenyl-λsup

Direct construction of xanthene and benzophenone derivatives via Br?nsted acid controlled Diels-Alder reaction of 3-vinylchromones and arynes

A Br?nsted acid controlled Diels-Alder reaction of 3-vinylchromones with arynes has been developed. By employing different kinds and amounts of acid, 9-aryl-9H-xanthen-9-ols or ortho-hydroxybenzophenones could be controllably furnished in good yields in an atom- and step-economic manner.

ZnO nanoparticles: An efficient green reusable catalyst for the synthesis of 3-formyl benzopyranones chalcones by Claisen-Schmidt reaction under solvent-free condition

An efficient environmentally benign protocol is reported for the production of benzopyranes based chalcones. In this protocol, yield is very high, reaction time is very small, work up is very simple, catalyst can be recycled, and it is free of any hazardo

ZnO Nanoparticles: An efficient green reusable catalyst for the synthesis of 3-formyl benzopyranones chalcones by Claisen-Schmidt reaction under solvent-free condition

An efficient environmentally benign protocol is reported for the production of benzopyranes based chalcones. In this protocol, yield is very high, reaction time is very small, work up is very simple, catalyst can be recycled, and it is free of any hazardo

Electron-deficient dienes. 5. An inverse-electron-demand Diels-Alder approach to 2-substituted 4-methoxyxanthones and 3,4-dimethoxyxanthones

(Chemical Equation Presented) Several 4-methoxyxanthones and 3,4-dimethoxyxanthones were synthesized in good yield via inverse-electron- demand Diels-Alder (IEDDA) driven domino reactions between a series of electron-deficient chromone-fused dienes with 1-(2,2-dimethoxyvinyl)pyrrolidine or tetramethoxyethene, respectively.

ORGANOPHOSPHORUS CHEMISTRY 22. REACTION OF 3-FORMYL-4-CHROMONE WITH TER- AND PENT-VALENT PHOSPHORUS COMPOUNDS

Trialkyl phosphites (2) and dialkyl phosphonates (5) attack the aldehydic carbonyl-carbon of 3-formyl-4-chromone (1), yielding the corresponding α-alkoxy (4), and α-hydroxy-phosphonates (6), respectively.On the other hand, the reaction of 1 with ylide-pho

Synthesis of a New Series of Chromonyl Chalcones

The α,β-unsaturated ketones (2 and 4) were prepared by the condensation of 3-formylchromone (1) or 8-acetyl-7-hydroxy-2,3-dimethylchromone (3) with substituted acetophenones or different aromatic aldehydes.Structures of the compounds were established by t