3-Bromo-5-methylpyridine → HCID 131734733, compound

Participants

Reaction Conditions

Reaction Steps

A solution of 3-bromo-5-methylpyridine (138 mg, 0.892 mmol), sodium tert-butoxide (154 mg, 1.604 mmol), tert-butyl N-[(3S)-pyrrolidin-3-yl]carbamate (224 mg, 1.203 mmol) and 2-(dicyclohexylphosphino)-2′,6′-isopropoxybiphenyl (RuPhos, 37.4 mmol) in anhydrous 1,4-dioxane (7 ml) was purged with argon. Tris(dibenzylideneacetone)dipalladium (0) (Pd2(DBA)3, 73.5 mg, 0.08 mmol) was added and the mixture was stirred at 70° C. for two hours in a closed vial. After cooling to room temperature the mixture was filtered through kieselguhr and concentrated under reduced pressure. The residue was purified by column chromatography (silica, gradient from 0.5 to 7% methanol containing 7N NH3 in dichloromethane (DCM)) to afford 163 mg of a yellow solid (0.588 mmol, 73%) MS (ESI) 278.2 [M+1]+.

Provenance & Evidence