Potassium Fluoride → 4-Bromo-5-(4-methylnaphthalen-1-yl)thiophene-2-carbonitrile

Participants

Reaction Steps

A round-bottomed flask was charged with 4,5-dibromothiophene-2-carbonitrile (536 mg, 2.00 mmol), 4-methylnaphthalen-1-ylboronic acid (409 mg, 2.20 mmol), Pd2(dba)3 (18.3 mg, 0.020 mmol) and KF (383 mg, 6.60). After degassed, dioxane (5 mL) and P(Bu-t)3 (0.24 mL, 0.2M, 0.048 mmol) was added. The reaction mixture was stirred at rt until complete. 30 mL of water was added, and the reaction mixture was extracted with ethyl acetate. The organic phase was dried over anhydrous sodium sulphate and then concentrated. The residue was purified by flash chromatography (hexane:CH2Cl2=3:1). 0.58 g (88%) of product was obtained as a white solid.

Provenance & Evidence