Preparation of 3-exomethylenecepham sulfoxides and 2-chlorosulfi

Details Preparation of 3-exomethylenecepham sulfoxides and 2-chlorosulfi Preparation of 3-exomethylenecepham sulfoxides and 2-chlorosulfi

1990-03-21

1991-10-01

Berch, Mark L.

Organic compounds -- part of the class 532-570 series

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

540359, C07D205095, C07D50110, C07B 4504

Patent

active

050535013

ABSTRACT:
3-Exomethylenecepham sulfoxide derivatives and intermediates therefor, viz. 2-chlorosulfinylazetidin-4-ones are prepared in high yield and purity by reaction of a penam sulfoxide ester with a N-chloro halogenating agent in the presence of molecular sieves.

REFERENCES:
patent: 4081440 (1978-03-01), Kukolja
patent: 4190724 (1980-02-01), Chon

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