119408-36-5

Basic information

• Product Name: 8-Benzyl-7-hydroxy-9H-acenaphtho<1,2-b>pyran-9-on
• CAS NO: 119408-36-5
• Molecular Weight: 326.351
• Mol File: 119408-36-5.mol
• Article Data: 1

Chemical Properties

• CAS DataBase Reference: 8-Benzyl-7-hydroxy-9H-acenaphtho<1,2-b>pyran-9-on(CAS DataBase Reference)
• NIST Chemistry Reference: 8-Benzyl-7-hydroxy-9H-acenaphtho<1,2-b>pyran-9-on(119408-36-5)
• EPA Substance Registry System: 8-Benzyl-7-hydroxy-9H-acenaphtho<1,2-b>pyran-9-on(119408-36-5)

Safety Data

• Hazardous Substances Data: 119408-36-5(Hazardous Substances Data)

Upstream product

• 15781-74-5 bis(2,4,6-trichlorophenyl)-2-benzylmalonate 
• 2235-15-6 1(2H)-acenaphthylenone 

Relevant articles and documents

Nonsteroidal Antiinflammatory Agents, 4. Rearrangement Reactions of Heterocycles, 11. Ketenoid Rearrangement and Oxidation of 2-Pyrons to 1,4-Naphthoquinon-5-alkanoic acids

Fused 2-pyrones 4, obtained by the thermal condensation of ketones 1 with reactive malonates 2, rearrange above 200 deg C to yield condensed dihydroxynaphthalines 5.The latter compounds can be oxidized to give 3-hydroxy-1,4-naphthoquinone-5-alkanoic acids.The reaction of ketone 8 with magic malonates 2 or chlorocarbonyl ketene 9 affords the pyrones 11 in low yields.The 2-pyrones 11 could not be rearranged to 13; a possible explanation for this behaviour is presented. - Keywords: Trichlorophenyl malonates; 2-Pyrone synthesis; Carbonyl ketenes as intermediates; Hydroxy-1,4-naphthoquinone alkanoic acids