HCID 178462316, compound → 74431-23-5

Participants

Reaction Conditions

Reaction Steps

The reaction mixture containing imipenem obtained at step (d) Example 1 was stirred with dichloromethane (900 ml) maintaining pH between 7.0 to 8.0 and the aqueous layer separated. The aqueous portion was degassed to remove dichloromethane and given activated carbon treatment. The filtered aqueous solution was mixed with isopropanol (400 ml) and stirred at 5-10° C. for 3 hours. The crystalline product so obtained was filtered, washed with isopropropanol followed by acetone and dried at 35-40° C. for 1 hour to obtain crystalline imipenem monohydrate (9.0 g, purity 99% by HPLC).

Provenance & Evidence