89051-52-5Relevant articles and documents
A facile halogenative cyclization of 4-(2-benzothioazolyldithio)azetidinones (Kamiya's disulfide) into 2β-(halomethyl)penams in a two layer system
Tanaka,Tanaka,Yamada,Nakai,Ohbayashi,Terada,Torii
, p. 3046 - 3048 (1989)
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THE TRAPPING OF SULFENIC ACIDS FROM PENICILLIN SULFOXIDES. HETEROCYCLIC MERCAPTANS
Micetich, Ronald G.,Maiti, Samarendra N.,Tanaka, Motoaki,Yamazaki, Tomio,Ogawa, Kazuo
, p. 325 - 330 (2007/10/02)
Various heterocyclic thiols have been used for trapping the azetidinone sulfenic acids obtained by the thermolysis of penicillin sulfoxides.The ester function was found to be important in determining the unsym-azetidinone disulfide (α,β- or β,γ-unsaturated) isomer formed.All β,γ-isomers prepared reacted with cupric chloride to give the 2-chloromethylpenams.