Sodium Carbonate Decahydrate → HCID 66748021, compound

Participants

Reaction Steps

Pd(dppf)Cl2 (19.4 mg) was added to a mixture of 1-bromo-4-(difluoro(phenyl)methyl)benzene (376 mg), potassium acetate (391 mg) and 4,4,4′,4′,5,5,5′,5′-octamethyl-2,2′-bi(1,3,2-dioxaborolane) (506 mg) in DME (10 mL) and DMSO (0.5 ml). The mixture was stirred at 80° C. under nitrogen overnight. Activated-carbon powder was added and the mixture was stirred for 5 min. The insoluble material was removed by filtration. The filtrate was concentrated in vacuo to give a brown oil of 2-(4-(difluoro(phenyl)methyl)phenyl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane. Tetrakis(triphenylphosphine)palladium(0) (38.4 mg) was added to a suspension of 3-bromopyridin-2-amine (192 mg), the prepared 2-(4-(difluoro(phenyl)methyl)phenyl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane and sodium carbonate decahydrate (634 mg) in DME (10 mL) and water (2 mL) and the mixture was stirred at 80° C. under nitrogen for 3 hr. Silica-gel was added and the volatiles were removed in vacuo. The mixture supported on silica-gel was purified by column chromatography (NH silica gel, eluted with EtOAc in hexane) to give the title compound (291 mg) as a colorless oil.

Provenance & Evidence