Ethanol → 2-(4-Bromo-2,3-difluoro-phenyl)-pyrimidine

Participants

Reaction Conditions

Reaction Steps

A mixture of 2-bromopyrimidine (2.0 g, 12.7 mmol), 4-bromo-2,3-difluorobenzeneboronic acid (1.0 g, 4.22 mmol), potassium carbonate (2.93 g, 21.1 mmol) in a mixture of toluene (30 ml)/ethanol (30 ml)/water (15 ml) were purged with nitrogen for 15 min. Tetrakis(triphenylphosphine)palladium(0) (488 mg, 0.42 mmol) was added and the mixture was stirred at 90° C. in a sealed-tube for overnight. The mixture was cooled to r.t. and was diluted with water and ethyl acetate. Layers were separated. The separated organic layer was dried (MgSO4), filtered and solvents were removed in vacuum. Column purification [Hexanes-Ethyl acetate, 2:1 (v/v)] gave bromide 3AC (0.97 g, 85%) as white solid.

Provenance & Evidence