Potassium Carbonate → HCID 66682062, compound

Participants

Reaction Conditions

Reaction Steps

Commercially available 1-(t-butoxycarbonyl)pyrrole-2-boronic acid (417 mg, 1.98 mmol) was dissolved in 1,2-dimethoxyethane (20 mL), and 2-chloro-1,3-benzothiazole (0.25 mL, 2.02 mmol), palladium (II) acetate (23.0 mg, 0.102 mmol), triphenylphosphine (105 mg, 0.400 mmol) and an aqueous potassium carbonate solution (3M, 1.3 mL, 0.433 mmol) were added, followed by stirring at 100° C. for 22 hours under nitrogen atmosphere. The reaction solution was cooled to room temperature, water (20 mL) and ethyl acetate (20 mL) were added, and the solution was separated. The organic layer was washed with saturated brine, and subsequently dried over anhydrous magnesium sulfate. The solvent was distilled off under reduced pressure, and the resulting residue was purified using silica gel column chromatography (elution solvent: ethyl acetate/hexane=0%-20%) to afford the desired compound (490 mg, yield 82%) as a pale yellow oil.

Provenance & Evidence