Trifluoroacetic acid → HCID 67111566, compound

Participants

Reaction Steps

Separately, the enantiomers of 2-(tert-butoxycarbonylamino)-4-(3-fluoro-4-(5-(1-phenylcyclopropyl)thiazolo[5,4-b]pyridin-2-yl)phenyl)butanoic acid were processed by the following procedure: 2-(tert-butoxycarbonyl)-4-(3-fluoro-4-(5-(1-phenylcyclopropyl)-thiazolo[5,4-b]pyridin-2-yl)phenyl)butanoic acid (0.047 g, 0.086 mmol) in DCM (2.0 mL) was added trifluoroacetic acid (1.0 mL, 13 mmol). After 5 min, the solvent was removed, the solid rinsed with water and diethyl ether to give both (R)-2-amino-4-(3-fluoro-4-(5-(1-phenylcyclopropyl)thiazolo[5,4-b]pyridin-2-yl)phenyl)butanoic acid trifluoroacetic acid salt and (S)-2-amino-4-(3-fluoro-4-(5-(1-phenylcyclopropyl)thiazolo[5,4-b]pyridin-2-yl)phenyl)butanoic acid trifluoroacetic acid salt. MS (ESI) m/z: calculated: 447.1; Observed: 448.1 (M++1).

Provenance & Evidence