Bromide ion → [4-(5-Cyano-1-methyl-1H-pyrrol-2-yl)-2-fluorophenyl]cyanamide

Participants

Reaction Steps

4-bromo-2-fluorophenylcyanamide (0.106 g, 0.5 mmol), tris(dibenzylideneacetone) dipalladium (11.6 mg, 0.0126 mmol), N-methyl-5-cyanopyrroleboronic acid (0.150 g, 1 mmol), and potassium carbonate (0.276 g, 2 mmol) were placed in a 40 mL vial fitted with a septa. The vial was then filled with a continuous flow of nitrogen and THF (2 mL) was added with stirring. Tri-tert-butylphosphine (10 wt % in hexane) (0.0486 mL, 0.0252 mmol) was added to the mixture and allowed to stir until the starting bromide was consumed. The mixture was then diluted with 1/1 hexane/ethylacetate, filtered through a plug of silica gel, the solvent evaporated and the residue was flash chromatographed on silica gel using 4/1 Hexane/THF to give [2-fluoro-4-(5-cyano-1-methyl-1H-pyrrol-2-yl)phenyl]cyanamide (0.015 g, 12%).

Provenance & Evidence