38382-55-7

Basic information

• Product Name: Methanone, (6-methylene-2,4-cyclohexadien-1-ylidene)-
• CAS NO: 38382-55-7
• Molecular Formula: C8H6O
• Molecular Weight: 118.135
• Mol File: 38382-55-7.mol
• Article Data: 2

Chemical Properties

• CAS DataBase Reference: Methanone, (6-methylene-2,4-cyclohexadien-1-ylidene)-(CAS DataBase Reference)
• NIST Chemistry Reference: Methanone, (6-methylene-2,4-cyclohexadien-1-ylidene)-(38382-55-7)
• EPA Substance Registry System: Methanone, (6-methylene-2,4-cyclohexadien-1-ylidene)-(38382-55-7)

Safety Data

• Hazardous Substances Data: 38382-55-7(Hazardous Substances Data)

Upstream product

• 3469-06-5 benzocyclobutenone 

Downstream Products

• 3469-06-5 benzocyclobutenone 
• 89-71-4 2-Methyl-benzoic acid methyl ester 
• 91416-31-8 3-(trichloromethyl)-3,4-dihydroisocoumarin 
• 118-90-1 ortho-methylbenzoic acid 
• 91416-32-9 1-Oxo-isochroman-3,3-dicarboxylic acid diethyl ester 
• 91416-33-0 2,3-dicarbomethoxytetral-1-one 
• 36112-45-5 Dimethyl 1-Hydroxynaphthalene-2,3-dicarboxylate 

Relevant articles and documents

Generation of 6-methylene-2,4-cyclohexadienylideneketene by flash photolysis of benzocyclobutenone in aqueous solution and study of the reactions of this ketene in that medium

Flash photolysis of benzocyclobutenone in aqueous solution produced a transient species with a microsecond lifetime whose rates of decay were measured in perchloric acid, sodium hydroxide, and buffer solutions over the acidity range [H+] 1 × 10-13 - 100 M. This produced a rate profile, isotope effects, and buffer behaviour typical of ketene reactions, and that, together with product identification, served to identify this transient as 6-methylene-2,4-cyclohexadienylideneketene, formed by electrocyclic opening of the four-membered ring of benzocyclobutenone. Comparison of rates of reaction of this ketene with those of its saturated analog, pentamethyleneketene, produced some expected as well as some unexpected results.