Process for preparing 2,2-bishalomethylpenam derivatives

Details Process for preparing 2,2-bishalomethylpenam derivatives Process for preparing 2,2-bishalomethylpenam derivatives

1985-03-15

1986-07-08

Andrews, R. L.

Chemistry: electrical and wave energy

Processes and products

204 81, C25B 306

Patent

active

045991510

ABSTRACT:
This invention provides a process for preparing a 2,2-bishalomethylpenam derivative represented by the formula ##STR1## wherein R.sup.1 represents a lower alkyl group, aryl group, arylmethyl group, arylcarbonyl group or aryloxymethyl group, R.sup.2 represents a carboxyl-protecting group, X.sup.1 and X.sup.2 are the same or different and represent a halogen atom, the process being characterized in that a disulfide represented by the formula ##STR2## wherein R.sup.1, R.sup.2 and X.sup.1 are as defined above and R.sup.3 represents an aryl group or heterocyclic group is subjected to an electrolytic reaction in a solvent in the presence of a halogen acid and/or halogen salt.

REFERENCES:
patent: 4464237 (1984-08-01), Torii et al.
patent: 4482491 (1984-11-01), Torii et al.
Heterocycles, vol. 10, 99 (1978), pp. 99-104.

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