Preparation of azetidinones via novel protected intermediates

Details Preparation of azetidinones via novel protected intermediates Preparation of azetidinones via novel protected intermediates

1987-12-02

1989-05-02

Shaver, Paul F.

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

Organic compounds

Silicon containing

C07F 710, C07F 718

Patent

active

048270067

ABSTRACT:
A multistep process is disclosed for preparing azetidinone intermediates used in the making penems and carbapenems wherein intermediates containing ##STR1## R' is independently hydrogen or 1, 2 or 3 of lower alkyl or lower alkoxy, preferably hydrogen, wherein R" is methyl, ethyl, a phenyl or alkyl, preferably ethyl, as a readily removable nitrogen protecting group are made.

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