Methyl 4,5-Dibromo-2-furancarboxylate → Methyl 4-bromo-5-methylfuran-2-carboxylate

関与物質

反応手順

To a solution of methyl 4,5-dibromo-2-furancarboxylate (4.5 g, 15.85 mmol) and BIS(TRIPHENYLPHOSPHINE)PALLADIUM(II) CHLORIDE (0.38 g, 0.541 mmol) in THF (100 mL) at RT was added chloro(methyl)zinc (15 mL, 30 mmol) dropwise. After stirring for 10 h, the reaction was quenched with NH4Cl (sat'd) (50 mL). The mixture was extracted with EtOAc (50 mL×3), and the collected organic layers were dried over MgSO4. Solvent was removed under vacuum and the resulting residue was purified via column chromatography (silica, EtOAc/Hex 10-20%) to give the title compound (2.5 g, 72%) as a white solid: LC-MS (ES) m/z 220 (M+H)+.

情報源と証拠