Hydrochloric Acid → HCID 178448381, compound

Participants

Reaction Steps

Hydrochloric acid (2.6 g) and 10% palladium on carbon (1.1 g, 50% wet) were added to a solution of mono-benzyloxycarbonyl-L-valine ganciclovir (10 g) in aqueous ethanol (Ethanol:Water::96 mL:26 mL) at ambient temperature. The reaction mass was flushed with nitrogen twice and hydrogenated at about 35° C. to 40° C. under a hydrogen pressure of about 0.5-1 kg/cm2 for about 1 hour. The reaction mass was filtered and washed with 10% aqueous ethanol (10 mL). Ethanol was distilled out completely under reduced pressure at about 30° C. to 35° C. The residue was dissolved in water (6.25 mL) and stirred to obtain clear solution. Iso-propanol (56 mL) was added slowly over a period of about 1 hour. The reaction mass was cooled to about 10° C. to 15° C., maintained for about 1 hour, filtered, washed with 10% aqueous iso-propanol (10 mL) followed by washing with iso-propanol (10 mL) and dried to obtain valganciclovir hydrochloride (5.8 g).

Provenance & Evidence