Trifluoroacetic acid → 5''-(4-Piperazin-1-ylmethyl-phenyl)-[2,2';4',3'']terpyridin-6'-ylamine

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Reaction Steps

To a solution of 4-[4-(6′-Amino-[2,2′;4′,3″]terpyridin-5″-yl)-benzyl]-piperazine-1-carboxylic acid tert-butyl ester (1.0 eq, 0.105 mmol, 55.1 mg) in DCM (1.0 ml) is added TFA (24.0 eq, 2.60 mmol, 0.2 ml). The reaction mixture is allowed to stir at room temperature for 30 minutes. The organic solvent is reduced in vacuo. The residue is purified by reverse phase chromatography (Isolute™ C18, 0-20% acetonitrile in water—0.1% TFA). The appropriate fractions by HPLC are combined and concentrated in vacuo. The resulting residue is dissolved in MeOH and loaded onto a SCX-2 cartridge eluting with MeOH and 2M NH3 in MeOH. The methanolic ammonia fractions are combined, concentrated in vacuo and dried under vacuum to afford the title compound; [M+H]+ 423.

Provenance & Evidence