Acetic Acid → HCID 178452510, compound

Participants

Reaction Conditions

Reaction Steps

(1S,3S,4R)-tert-butyl 3-(1-amino-6-bromonaphthalen-2-ylcarbamoyl)-2-azabicyclo[2.2.1]heptane-2-carboxylate (2.01 g, 4.36 mmol) was suspended in AcOH (8.73 mL, 152.7 mmol) and placed in a preheated 50° C. oil bath. The suspension was let stir at 50° C. for 4 hours and at room temperature for 14 hours. Upon completion, the reaction mixture was diluted with ethyl acetate and aqueous NaOH (6M, 25.4 mL, 152.7 mmol) was added slowly with stirring. The layers were separated and the aqueous layer was back extracted with ethyl acetate twice. The combined organic layers were dried over sodium sulfate and concentrated in vacuo. The resulting oil was purified by normal phase chromatography (30-55-100% ethyl acetate (5% MeOH) in hexanes) to give (1S,3S,4R)-tert-butyl 3-(7-bromo-1H-naphtho[1,2-d]imidazol-2-yl)-2-azabicyclo[2.2.1]heptane-2-carboxylate (1.8 g, 93%). LCMS-ESI+: calc'd for C22H24BrN3O2: 441.11 (M+); Found: 442.7 (M+H+).

Provenance & Evidence