Trifluoroacetic acid → 5-Bromo-1-methyl-3-(4-(piperidin-4-yl)phenylamino)pyrazin-2(1H)-one

Participants

Reaction Steps

Compound 214a was synthesized using the same procedure as for 121c, except using tert-butyl 4-(4-(6-bromo-4-methyl-3-oxo-3,4-dihydropyrazin-2-ylamino)phenyl)-piperidine-1-carboxylate (121a) (0.53 g, 1.08 mmol), trifluoroacetic acid (0.9 mL, 10.8 mmol) and methylene chloride (20 mL). Work-up and concentration afforded a quantitative yield of 214a (390 mg) as yellow oil, which was used without purification in the next step.

Provenance & Evidence