Reaktion #1479006

Reaktionsgleichung

ceftriaxone

triethylamine

sodium acetate

→

ceftriaxone sodium

Lösungsmittel

acetone

acetone

Reaktionsbedingungen

Aufarbeitung

1. 1
   SonstigeTo the clear solution obtained
2. 2
   Filtrationfiltered

Vorschrift

The ceftriaxone acid was dissolved in aqueous acetone using triethylamine. To the clear solution obtained, sodium acetate (13 g) was added and charcoalized. To the filtrate, acetone (720 mL) was added over 1-2 h and filtered to get ceftriaxone sodium. The wet material of ceftriaxone sodium thus obtained was dissolved in water (120 mL) followed by addition of acetone (222 mL). The solution was cooled to −5 to −15° C. and the impurity separated as a sticky mass. The clear solution was separated and the temp raised to 18-22 C. Acetone (624 mL) was added under stirring over 1 h, filtered and washed with acetone. Drying under vacuum afforded pure ceftriaxone sodium (19.2 g).

Quelle