Trifluoroacetic acid → HCID 68157412, compound

Participants

Reaction Steps

To a solution of [(S)-1-(3-phenyl-3H-imidazo[4,5-b]pyridin-2-yl)ethyl]carbamic acid tertbutyl ester (1.77 g) in DCM (4 mL) was added TFA (20 mL) and the resulting mixture was stirred at RT for 15 min. Volatiles were removed under reduced pressure and the resulting residue was partitioned between DCM and a saturated solution of NaHCO3. The aqueous phase was further extracted with DCM and then the combined organic layers were dried (Na2SO4) and then concentrated in vacuo. The resulting residue was purified by column chromatography (Si—PCC, gradient 0-8% 2M NH3/MeOH in DCM) affording (S)-1-(3-Phenyl-3H-imidazo[4,5-b]pyridin-2-yl)ethylamine as colourless gum (540 mg, 20% over three steps). LCMS: RT 1.65 min [M−NH2]+ 222.0.

Provenance & Evidence