ethyl 2-(N-phenyl-N-propylamino)acetate → 2-(N-phenyl-N-propylamino)acetic acid

Beteiligte Stoffe

Reaktionsschritte

To a solution of the product obtained in EXAMPLE 108 (5.0 g) in ethanol (30 ml), 3N aqueous sodium hydroxide (30 ml) was added and the mixture was stirred for 10 minutes under reflux. The aqueous solution was concentrated under reduced pressure and washed with ether, acidified to pH 3 with 2N hydrochloric acid and extracted four times with ethyl acetate. The combined organic layer was washed with saturated sodium chloride, dried over anhydrous sodium sulfate and then concentrated under reduced pressure. The residue was crystallized from ethyl acetate-hexane to give 2.96 g (68%) of the objective compound.

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