Cephalosporin reduction process

Details Cephalosporin reduction process Cephalosporin reduction process

1979-02-01

1980-09-16

Rizzo, Nicholas S.

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

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

544 21, 544 22, 424246, C07D50104

Patent

active

042231337

ABSTRACT:
Cephalosporin sulfoxides are reduced to the corresponding cephalosporins in the presence of a halogen scavenger with triaryl phosphite-halogen complexes derived from the kinetically controlled reaction of selected triaryl phosphites and chlorine or bromine.

REFERENCES:
patent: 3641014 (1972-02-01), Murphy et al.
patent: 3922268 (1975-11-01), Murphy et al.
patent: 4044002 (1977-09-01), Hatfield
patent: 4115643 (1978-09-01), Kukolja et al.
Drabowicz et al., Organic Preparations and Procedures Int. 9(2), 63-83 (1977).
Coe et al., J. Chem. Soc., 1954, pp. 2281-2287.

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