Process for preparing derivatives of 7-amino-desacetoxy cephalos

Details Process for preparing derivatives of 7-amino-desacetoxy cephalos Process for preparing derivatives of 7-amino-desacetoxy cephalos

1980-03-24

1981-11-10

Rizzo, Nicholas S.

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

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

424246, C07D50120

Patent

active

042999553

ABSTRACT:
Process for preparing cephalexine monohydrate and cephadroxyl monohydrate, according to which a reaction is carried out of a mixed anhydride prepared from a Dane salt of phenylglycine or p-hydroxyphenyl-glycine with a chloroformiate, with an aqueous solution of 7-ADCA in a solvent selected from the group comprising dimethyl sulphoxide, dimethylacetamide, formamide, dimethylformamide and dioxane.

REFERENCES:
patent: 3502663 (1970-03-01), Barnes
patent: 3531481 (1970-09-01), Pfeiffer
patent: 3985741 (1976-10-01), Crast et al.

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