667886-89-7

Upstream product

• 403-42-9 1-(4-fluorophenyl)ethanone 
• 456-22-4 4-Fluorobenzoic acid 
• 451-46-7 4-fluorobenzoic acid ethyl ester 
• 29681-98-9 p-fluorobenzoylacetone 
• 403-33-8 methyl 4-flurobenzoate 
• 67-64-1 acetone 

Downstream Products

• 331840-68-7 2,6-bis(4-fluorophenyl)-4H-pyran-4-one 
• 1240259-77-1 Br^(1-)*C₃₁H₂₅O₄⁽¹⁺⁾ 
• 1240259-78-2 C₄₃H₃₂NO₃S⁽¹⁺⁾*ClO₄^(1-) 
• 1256636-99-3 C₄₇H₄₁N₂O₂S⁽¹⁺⁾*ClO₄^(1-) 
• 1240259-76-0 C₃₁H₂₄O₄ 

Relevant academic research and scientific papers

Functional aromatic polyethers: Polymers with tunable chromogenic and fluorogenic properties

This paper describes the preparation and chemical modification of pyranone-based aromatic polyethers to yield polymers that contain pyrylium rings, which permit the design of high performance materials with "a la carte" chromogenic and fluorescence behavior. These materials can be used for innovative applications such as luminescent converter (LUCO) materials for hybrid light-emitting diodes (LEDs) or the preparation of selective chromogenic and fluorogenic sensing materials for the preparation of sensing devices. The fluorescence emission maxima of polyether films ranged from 514 to 561 nm, allowing the future development of LUCO-LED devices. Moreover, the interaction of polyether films with different amines leads to color changes and variations in the intensity and emission maxima of fluorescence, which permits the development of amine sensing materials.

New strong base synthesis of symmetrical 1,5-diaryl-1,3,5-pentanetriones from acetone and benzoate esters

Lithium hexamethyldisilazide (LiHMDS) was used to condense substituted benzoate esters with acetone to afford symmetrical 1,5-diaryl-1,3,5- pentanetriones that were isolated, characterized (including a representative X-ray crystallographic analysis), and