Sulfinyl halides and their preparation from penicillin sulfoxides
申请人:Eli Lilly and Company
公开号:US04165315A1
公开(公告)日:1979-08-21
A penicillin sulfoxide ester is reacted with an N-chloro halogenating agent at a temperature of from about 75.degree. C. to about 135.degree. C. to produce a novel 2-chlorosulfinylazetidin-4-one intermediate. The intermediate can be treated with stannic chloride to produce a 3-exomethylenecepham sulfoxide.