Potassium Carbonate → 4-(4-Bromothiophen-2-yl)pyridine

Participants

Reaction Steps

2,4-Dibromothiophene (2.97 g, 12.28 mmol), pyridine-4-boronic acid (1.50 g, 12.28 mmol), potassium carbonate (5.52 g, 39.91 mmol) and tetrakis(triphenylphosphine)palladium (0) (426 mg, 0.38 mmol) were refluxed in ethanol/1,2-dimethoxyethane (1:4 v/v; 100 mL) at 100° C. for 7 hours. The solution was allowed to cool, and then filtered and evaporated. The residue was purified by flash chromatography using a gradient of ethyl acetate in hexane to give a yellow solid as the sub-title compound (1.52 g), m/z 240, 242 (MH+).

Provenance & Evidence