Trifluoroacetic acid → HCID 58010039, compound

Participants

Reaction Conditions

Reaction Steps

A mixture of (R)-(9H-fluoren-9-yl)methyl 3-(2-(tert-butoxycarbonyl(5-tosyl-5H-pyrrolo[2,3-b]pyrazin-2-yl)amino)acetyl)piperidine-1-carboxylate (0.20 g, 0.27 mmol), TFA (1.0 mL, 13 mmol) and TFAA (1.0 mL, 7.1 mmol) was stirred at about 25° C. for about 16 h. The reaction mixture was partitioned between EtOAc (50 mL) and aqueous saturated NaHCO3 (2×50 mL). The organic layer was separated, dried over anhydrous Na2SO4, filtered, and concentrated under reduced pressure to give (R)-(9H-fluoren-9-yl)methyl 3-(3-tosyl-3H-imidazo[1,2-a]pyrrolo[2,3-e]pyrazin-8-yl)piperidine-1-carboxylate as a clear oil (0.17 g, 99%): LC/MS (Table 2, Method a) Rt=2.68 min; MS m/z: 618 (M+H)+.

Provenance & Evidence