75824-01-0

Usage

General Description

5,5,6,6,7,7,8,8,9,9,9-Undecafluorononane-2,4-dione is a chemical compound with the molecular formula C9F11O2. It is a member of the perfluorinated compounds, which are known for their unique properties and diverse industrial applications. This specific compound is a fluorinated ketone, and is used in various industrial processes such as in the production of specialty polymers, pharmaceuticals, and agrochemicals. It is also used as a solvent in some niche applications. Due to its highly fluorinated nature, it is known for its stability and resistance to heat, chemicals, and environmental degradation. However, like all fluorinated compounds, 5,5,6,6,7,7,8,8,9,9,9-Undecafluorononane-2,4-dione has also raised environmental and health concerns due to its persistence and potential bioaccumulation in the environment.

InChI:InChI=1/C9H5F11O2/c1-3(21)2-4(22)5(10,11)6(12,13)7(14,15)8(16,17)9(18,19)20/h2H2,1H3

Upstream product

• 355-43-1 n-perfluorohexyl iodide 
• 77893-60-8 tridecafluorohexyl-acetone 
• 424-18-0 perfluorohexanoic acid methyl ester 
• 67-64-1 acetone 
• 23790-49-0 F-hexanonitrile 

Downstream Products

• 75823-69-7 1,3-Dimethyl-5-undecafluoropentyl-1H-pyrazole 
• 75823-68-6 1,5-Dimethyl-3-undecafluoropentyl-1H-pyrazole 
• 75833-29-3 3-Methyl-1-phenyl-5-undecafluoropentyl-1H-pyrazole 
• 75823-79-9 5-Methyl-1-phenyl-3-undecafluoropentyl-1H-pyrazole 

Relevant academic research and scientific papers

One-pot reaction for the synthesis of fluorinated β-diketones

Fluorinated β-diketones have been synthesized in high yield from the one-pot reaction of silyl enol ethers with perfluoroalkyl iodides initiates with Na2S2O4/NaHCO3, followed by treatment with diethylamine and acid hydrolysis.

Reactions of perfluoroalkylacetones with nucleophilic reagents

The interaction of perfluoroalkylacetones of formula RFCH2COCH3 (RF=n-C3F7, n-C4F9, n-C6F13, n-C8F17) with ammonia and primary and secondary amines has been studied. In all cases, nucleophilic reagents initially dehydrofluorinate the starting ketone, and then substitution of the vinyl fluorine atom by a nucleophile occurs to give aza analogues of β-dicarbonyl compounds RFC(NR2)=CH-C(O)CH3; their hydrolysis yields the corresponding β-diketones under mild conditions. Perfluoroalkylacetones react with sodium alkoxides to give compounds of formula RFC(OR)2CH2COCH3, whose acidic hydrolysis also results in β-diketones.

Synthese des F-alkylpyrazoles: Identification par RMN de 19F et comparaison avec les homologues hydrocarbones

In this paper, we report the synthesis of forty new pyrazoles substituted by one or more perfluoroalkyl chains.These compounds were obtained by condensation of a hydrazine (substituted or not) on an F-alkyl β-diketone.Unlike hydrocarbon chemistry, a react