Reaktion #643946

Reaktionsgleichung

sodium hydroxide

metformin hydrochloride

acetic acid

→

metformin acetate

Ausbeute 73.0%

Lösungsmittel

water

Reaktionsbedingungen

Aufarbeitung

1. 1
   workup.DISSOLUTIONto dissolve thoroughly
2. 2
   FiltrationThe resulting crystal was filtered
3. 3
   Waschenwashed with acetone
4. 4
   Sonstigedried at 60° C.

Vorschrift

20.0 g (1 equivalent) of metformin hydrochloride and 30 Ml of water, and then 10 Ml (1.45 equivalents) of acetic acid were added to a reactor, and stirred for 2 hours at 30° C. to dissolve thoroughly. Then 1.23 g (1.5 equivalents) of aqueous solution of sodium hydroxide was added to the reaction solution. The resulting crystal was filtered and washed with acetone, and then dried at 60° C. to obtain 16.7 g of metformin acetate (yield: 73.0%).

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