Ammonium Chloride → HCID 67463235, compound

Participants

Reaction Steps

n-Butyl lithium (2.5 M, 1.8 mL, 4.5 mmol) was added dropwise to a solution of 5-bromo-pyrimidine (0.668 g, 4.2 mmol) in THF (10 mL), under nitrogen at −78° C. and stirred for 1 hour. 3-Oxo-8-aza-bicyclo[3.2.1]octane-8-carboxylic acid tert-butyl ester (0.675 g, 3.0 mmol) in THF (5 mL) was added dropwise at −78° C. and the reaction mixture warmed to room temperature over 1 hour. Saturated aqueous ammonium chloride and ethyl acetate were added, the organics separated, dried over magnesium sulphate, filtered and the solvent removed by evaporation under vacuum. The residue was purified by flash chromatography on silica eluting with 10% methanol/ethyl acetate. The fractions containing the desired product were concentrated under vacuum to give the title compound (0.14 g). LCMS m/z 306 [M+H]+. R.T.=2.89 min (Analytical Method 3).

Provenance & Evidence