Process for 3-exomethylenecepham sulfoxides

Details Process for 3-exomethylenecepham sulfoxides Process for 3-exomethylenecepham sulfoxides

C - Chemistry, Metallurgy

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C07D 501/22 (2006.01) C07C 41/00 (2006.01) C07C 67/03 (2006.01) C07D 205/04 (2006.01) C07D 205/08 (2006.01) C07D 501/02 (2006.01) C07D 501/04 (2006.01) C07D 501/08 (2006.01) C07D 501/14 (2006.01) C07D 501/46 (2006.01)

Patent

CA 1150240

X-5146 Abstract Process for 3-exomethylenecepham sulfoxides comprising reacting a 2-chlorosulfinylazetidin-4-one ester with stannic chloride in the presence of oxo compounds, for example lower alkyl ethers and lower alkyl ketones, to form a stannic chloride complex with 2-chlorosulfinylazetidinone stabilized with said oxo compounds which, upon treatment with an hydroxy- containing compound such as methyl alcohol, decomposes providing said 3-exomethylenecepham sulfoxide.

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