Process for preparing 2-exo-methylenepenam derivatives

Details Process for preparing 2-exo-methylenepenam derivatives Process for preparing 2-exo-methylenepenam derivatives

1992-03-10

1993-03-23

Rizzo, Nicholas S.

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

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

514192, C07D49900

Patent

active

051965305

ABSTRACT:
The present invention provides a process for preparing a 2-exo-methylenepenam derivative represented by the formula (2), the process being characterized by reacting an allenyl .beta.-lactum compound represented by the formula (1) with a metallic reducing agent, in which R.sup.1, R.sup.2, R.sup.3 and X are defined in the specification. ##STR1##

REFERENCES:
patent: 4496484 (1985-01-01), Micetich et al.

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