3-(propan-2-ylamino)propanenitrile

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: A solution of 3-methyl-5-[2-(pyridin-4-ylamino)-ethoxy]-benzoic acid trifluoroacetate salt (0.026 g) in anhydrous DMF (2 ml) was treated at room temperature with 3-isopropylamino-propionitrile9 (0.017 g), PyBrop® (0.062 g) and DIPEA (0.025 ml). More PyBrop® was added after 2 days (0.072 g) and 7 days (0.065 g). More 3-isopropylamino-propionitrile was added after 2 days (0.03 ml), 4 days (0.1 ml) and 7 days (0.1 ml). After 24 h more, the mixture was evaporated to dryness under reduced pressure and the residue subjected to preparative hplc giving the title compound as a clear colourless gum (0.016 g). the mixture was evaporated to dryness under reduced pressure