Process for preparing .beta.-lactam compound

Details Process for preparing .beta.-lactam compound Process for preparing .beta.-lactam compound

1999-01-20

2000-03-28

Berch, Mark L.

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

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

205423, C07D49906, C25B 304

Patent

active

060433566

ABSTRACT:
The present invention provides a process for preparing an exo-methylenepenam compound represented by the general formula (5) characterized in that a .beta.-lactam halide compound represented by the general formula (2) is reduced with a metal having a standard oxidation-reduction potential of up to -0.3 (V/SCE) in an amount of at least one mole per mole of the halide compound and with a metal compound having a higher standard oxidation-reduction potential than the metal in an amount of 0.0001 to 10 moles per mole of the halide compound, or is subjected to an electroreduction process to obtain the exo-methylenepenam compound. ##STR1##

REFERENCES:
patent: 5196530 (1993-03-01), Torii
Chemistry Letters, (8) 709-710 1995-Tanaka et al.
Bull. Chem. Soc. Jpn., 68(5) 1385-1391 1995-Tanaka et al.

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