Process for preparing cephalosporin esters in the presence of li

Details Process for preparing cephalosporin esters in the presence of li Process for preparing cephalosporin esters in the presence of li

1978-03-06

1979-06-26

Berch, Mark L.

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

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

544 26, 544 30, C07D50104

Patent

active

041593723

ABSTRACT:
A process for preparing a cephalosporin ester which comprises subjecting an organic halide or an alcohol to reaction with a cephalosporin acid, a cephalosporin acid halide or a salt thereof in the presence of liquid sulfur dioxide.

REFERENCES:
patent: 3928333 (1975-12-01), Wheeler
patent: 4115646 (1978-09-01), Bently et al.
Flynn, Ed., "Cephalosporins & Penicillins", (1972) pp. 147-151, 172-176.
Cocker et al., J. Chem. Soc., 1966, 1142.

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