66823-64-1

Basic information

• Product Name: perfluoro-2-methyl-1,2-dihydrobenzocyclobuten-1-one
• Synonyms: perfluoro-2-methyl-1,2-dihydrobenzocyclobuten-1-one
• CAS NO: 66823-64-1
• Molecular Weight: 276.086
• Mol File: 66823-64-1.mol
• Article Data: 1

Chemical Properties

• CAS DataBase Reference: perfluoro-2-methyl-1,2-dihydrobenzocyclobuten-1-one(CAS DataBase Reference)
• NIST Chemistry Reference: perfluoro-2-methyl-1,2-dihydrobenzocyclobuten-1-one(66823-64-1)
• EPA Substance Registry System: perfluoro-2-methyl-1,2-dihydrobenzocyclobuten-1-one(66823-64-1)

Safety Data

• Hazardous Substances Data: 66823-64-1(Hazardous Substances Data)

Upstream product

• 52196-64-2 perfluoro(1-methyl-1,2-dihydrocyclobutabenzene) 
• 76-05-1 trifluoroacetic acid 

Downstream Products

• 1169757-89-4 2-(carboxymethyl)-3,4,5,6-tetrafluorobenzoic acid 
• 139256-86-3 perfluoro-4-methyl-1H-isochromen-1-one 
• 58161-61-8 octafluoro-1-indanone 

Relevant articles and documents

Carbonylation of Polyfluorobenzocyclobutenones in a SbF5 Medium

The carbonylation of perfluoro-2-R-benzocyclobutenones (R = F, CF3, C2F5, C6F5) in a CO-SbF5 system is accompanied by transformations of the four-membered cycle in the substrate to form polyfluorinated 1H-isochromene derivatives. The reaction of perfluoro-2-R-benzocyclobutenes (R = F, CF3, C2F5) with (CF3CO)2O or CF3COOH in a SbF5 medium in a sealed ampule involves formation of polyfluorobenzocyclobutenones and their carbonylation under the reaction conditions.