4-Fluorophenylboronic acid → HCID 67232695, compound

Participants

Reaction Conditions

Reaction Steps

3-Bromo-2-(4-fluoro-phenyl)-7-hydroxy-thieno[3,2-c]pyridine-6-carboxylic acid methyl ester (0.34 g, 0.89 mmol), example 36-g, 4-fluoro-phenyl boronic acid (0.373 mg, 2.67 mmol), sodium methoxide (0.433 g, 8.01 mmol), and tetrakis(triphenylphosphine)palladium(0) (257 mg, 0.22 mmol) were suspended in 15 mL of 1,4-dioxane. The reaction mixture was heated at 120° C. for 30 min. using a CEM microwave reactor (CEM, Matthews, N.C.). The reaction mixture was diluted with ethyl acetate, and washed with saturated sodium bicarbonate and brine solutions. The organic fraction was dried over anhydrous sodium sulfate and concentrated. The crude product was purified by flash chromatography eluting from silica gel with a gradient of 0-60% ethyl acetate in hexanes to produce 0.179 g of a yellow solid. MS: (+) m/z 398.0 (M+1).

Provenance & Evidence