Cesium carbonate → Methyl 3-cyano-4-isobutylbenzoate

関与物質

反応条件

反応手順

To a solution of (2-methylpropyl)boronic acid (0.508 g), methyl 3-cyano-4-{[(trifluoromethyl)sulfonyl]oxy}benzoate (D22) (1.4 g) and Cs2CO3 (4.43 g) in toluene (10 mL) and water (1 mL) stirred under nitrogen at room temperature was added PdCl2(dppf)-CH2Cl2 adduct (0.370 g). The reaction mixture was stirred at 100° C. for 12 h. The solvent was removed under reduced pressure. The residue was dissolved in EA (80 mL) and washed with water and brine, dried over anhydrous Na2SO4. The solution was concentrated and the crude product was purified by column chromatography to afford methyl 3-cyano-4-(2-methylpropyl)benzoate (D23) (800 mg) as a colorless oil. MS (ES): C13H15NO2 requires 217. found 218.1 (M+H+).

情報源と証拠